Cisco Core switch

I have a Cisco 3750 24 port, a 3550 48 port and 2 new 48 port 2960-S switches.  I need to cleanup and disco some of my old ones and want to create the fastest network possible utilizing gigabit framework.  Which one do you recommend I use a the core switch and how do you suggest connecting servers, NAS, Backups and client machines to them and to the other switches?  I have roughly 120 total end user devices and roughly 18 servers Thanks!
Montana ManIT SupportAsked:
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RafaelCommented:
I would use the 3750s as your core and stack them. Use the up-links to trunk the 2960's to them then the 3550's (They are near EOL EOS).  The rest depends on the demand of BW.  You can certainly trunk to the NAS and Backups, however you have to consider things such as do the backups run at night? Are the servers chatty during the day, etc. Running VMware, do they need to be HA, VLAN's, any VOIP requirements, plan on going to 10G or UCS ?

Do you have a rough sketch you can share?
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