Looking for a router with VPN

Hi,

Although this is a question about VPN, I know I need a new router to do what I want, hence why I'm posting here! :)

My setup and wishlist
1. I have a home connection with a couple of computers (Mac, PC, Linux) and three iphones sharing the connection
2. I would like to get a service like BTGuard or something similar and have the router connect to it so that I don't need to install any software on the computers, but simply continue to have them go through the router (i.e. the router handles all of the work)
3. I don't want to use DD-WRT or anything like that...stock oem firmware please
4. I would like to get access to my files remotely
5. Ideally it would be nice to have the iphone connect to home when using unsecured wi-fi
6. Must be ADSL2+, have wi-fi and have four gigabit ports

So basically I'm hoping that there's something out there router-wise that can handle all traffic going out to a service like BTGuard (or StrongVPN) and ideally, handle inbound connections via VPN as well for the iPhones. The idea is for my web traffic to be anonymised a bit from home and to provide a more secure way to surf via wi-fi when outside the home.

Is anyone aware of such a device? Too much to ask?

Thanks very much – sorry for the bombardment of questions, I'm a newb at all of this.

Cheers
Chris