Draytek. This model is a good option.
Seriously, Draytek has the best routers I've ever had the chance to install. They're not cheap, but they support just about any standard and are incredibly configurable. (even though the standard settings usually 'just work'). Also, on the Draytek.com site, you've got the chance to play with a live web demo of every available router's firmware. (eg. here)

Edit: Port Forwarding is dead easy with Draytek routers. Have a look via the supplied link above and you'll see for yourself.