32 or 64-bit Office 2013?

I need to determine which Office to go with 2013 version.   32 or 64.  
Currently users are running Office 2010 64-bit.  Going to Off365 2013, debating between two (32/64).

Wondering what everyone's experiences with these and opinions.  Thanks!

Here are some of the differences/considerations when reviewing 32-bit Office vs. 64-bit Office:
Choose the 32-bit or 64-bit version of Office
There are two versions of Office available to install: 32-bit and 64-bit. Which version is right for you depends on how you plan to use Office.
The 64-bit version of Office has some limitations, but is the right choice when:
•      You work with extremely large data sets, like enterprise-scale Excel workbooks with complex calculations, many PivotTables, connections to external databases, PowerPivot, PowerMap, or PowerView. The 64-bit version of Office may perform better for you.
•      You work with extremely large pictures, videos, or animations in PowerPoint. The 64-bit version of Office may be better suited to handle these complex slide decks.
•      You work with extremely large Word documents. The 64-bit version of Office may be better suited to handle Word documents with large tables, graphics, or other objects.
•      You’re working with files over 2GB in Project 2013, especially if the project has many subprojects.
•      You want to keep the 64-bit version of Office that you’re already using. The 32-bit and 64-bit versions of Office programs aren’t compatible, so you can’t install both on the same computer.
•      You’re developing in-house Office solutions, like add-ins or document-level customizations.
•      Your organization requires Hardware Data Execution Prevention (DEP) be enforced for Office applications. DEP is a set of hardware and software technologies that some organizations use to enhance security.
If none of these situations apply to you, the 32-bit version of Office is probably the right choice.
Note   The 32-bit version of Office works well with both the 32-bit and the 64-bit versions of Windows. If you are installing the 64-bit version of Office, you need the 64-bit version of Windows. If you’re not installing on Windows, you don’t need to worry about 32-bit or 64-bit options. Which version of Office do I have?
This is important before you install
If you have a version of 32-bit or 64-bit Office in your computer and you want to install Office 2013 or Office 365 or an Office stand-alone application like Visio, you have to install the corresponding 32-bit or 64-bit version of the other program. For example, if your computer has a 32-bit version of Office 2010 and you want to install Office 2013, you have to install the 32-bit version. You can't mix 32-bit and 64-bit versions of Office. For details, see “Office (64-bit) couldn’t be installed” error when you install Office 2013 or Office 365.
Note   If you decide to switch from 32-bit Office to 64-bit Office, you need to uninstall the 32-bit version first, and then you can install the 64-bit version.
Limitations of the 64-bit version of Office
The 64-bit version of Office may perform better in some cases, but there are limitations:
•      Solutions using ActiveX controls library, ComCtl controls won’t work.
•      Third-party ActiveX controls and add-ins won’t work.
•      Visual Basic for Applications (VBA) that contain Declare statements won’t work in the 64-bit version of Office without being updated.
•      Compiled Access databases, like .MDE and .ACCDE files, won’t work unless they’re specifically written for the 64-bit version of Office.
•      In SharePoint, the list view won’t be available.
If you have specific add-ins that you use in the 32-bit version of Office, they may not work in 64-bit Office, and vice versa. If you’re concerned, check your current version of Office before installing the new one. Considering testing the add-in with 64-bit Office, or finding out if a 64-bit version of the add-in is available from the developer.
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Jamie GarrochSenior Technical Consultant at BrightCarbonCommented:
As a rule of thumb, I use the 32 bit version if add-ins are in use or expected to be used that were developed prior to the year 2012 as it's likely that they didn't take 64 bit MSO into account (we develop add-ins and have been through the pain of 'upgrading' several products to be 32/64 bit compatible).

If you can guarantee that add-ins won't be used, I'd go with the 64 bit version.

Reading your above extract (which I recognise) It's unlikely that a publisher would develop and add-in that was only 64 bit compatible but not impossible!

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Tiras25Author Commented:
Understood.  So far I know few users have a Bloomberg plug-in for Excel.  I'll find out if there are any other plugins around.
Thanks bunch!
You said that currently users are using Office 2010 64-bit.  If they aren't reporting problems or being blocked with their current setup, why would you go back to 32-bit?
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Jamie GarrochSenior Technical Consultant at BrightCarbonCommented:
I forgot to mention that very good point footech!
Tiras25Author Commented:
Thanks bunch guys!
AddIns can be made to work in 64 bit but many ActivX objects don't. Also you may have problems getting some codecs in 64 bit. Also you cannot mix 64 and 32 bit Office components so e.g. I don't think there's a 32 bit PowerPoint Viewer.

If you are already using 64 bit office then it will probably be OK but there are very few advantages unless you have giant Excel spreadsheets and some disadvantages.

Personally I would go for 32 bit everywhere if that's an option.
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