I need a reliable VPN solution

Hello fellow techies,

I'm look for a RELIABLE vpn solution for an install.  I have a two part question.  Let me give a brief explination of the situation and network.  I have a client that has a Mac Pro network in her office.  This network consists of 2 Mac Pro systems, gigabit switch, NAS, Time Capsule, cable modem 1/10mbps, static IP and multiple printers.  They backup to the Time Capsule several time daily.

The client would like to also setup a Time Capsule or NAS at thier house to provide offsite backups & redundency.  They would also like to access thier office NAS via the web or VPN.

I'm considering setting up the NAS for FTP to provide file access out of the work office.

Can anyone advise on a reliable VPN router around the $400 price range?  Can anyone advise on setting up two Time Capsules in remote locations via VPN?

I assume I'm going to need a VPN router or appliance in both the work and home location for a "always live" connection. (please bear in mind that the home location has a dynamic IP).  

I'm just not sure how the two Time Capsules would work with each other.

I know that some cheaper "off the shelf" VPN routers are not so reliable.  

I'm sorry but, I don't really work on Mac networks and this is a little different for me.  I must say though; the more I work on this network the more the Mac OSX is really interesting me.  It's kinda like learning everything all over again.

Thanks in advance for any advice.