I had 2 primary reasons for purchasing the FVS338. The first, of course, was the VPN capability. But second--and just as important--was the dial-up failover. I have previously been using an SMC7004ABR, and except for the general geekiness of the thing (aren't they all), it worked fine. It also included dial-up failover. But I thought I would give the FVS338 a try because I occassionally access my home network while on the road (Starbucks, etc), and thought that some additional VPN security might be worth the investment.
Well, the FVS338 arrived today...and I am returning it tomorrow. Not only was a first attempt at establishing a VPN connection unsuccessful (I more or less expected that), I discovered that the dial-up failover is REALLY stupid!! Unlike the SMC router which switches over to dial-up when it detects a failure of the broadband connection...and then switches back to broadband when it detects that broadband has been restored, the FVS338 will NOT switch back to broadband...even if the dial-up connection fails!!! How stupid is that! :(
Bottom line: If you are like me and simply looking for VPN security in WiFi hotspots, etc...don't bother with a VPN router. Just sign up for a $5/mo VPN service, like WiTopia's personalVPN. I tried it...and had it up and running in 5 minutes.
For dial-up failover...SMC7004ABR. It does that job just fine (and is a nice router besides).