Having used a Apple Time Capsule for backups, I configured it to act as a main wireless router to replace the router capabilities of the Virgin Media Super Hub, which for my wireless wasn't so super. It suffered poor coverage and frequent drop outs.
I set the super hub into Modem only mode (instructions) and let the Apple Time Capsule run the wireless network. Recently this started dropping connections and the hard drive started getting errors on the mac backups so I looked at what I should replace it with.
I bought a
TP-Link TL-WR1043ND Ultimate Wireless N Gigabit Router
from Amazon and flashed it with DD-WRT open firmware (follow this link and lookup 1043) and am now seeing 20-30Mb wireless connections, which is about 2x the speed I was getting from anything else.
One tip is to use PPTP VPN pass through on this modem you need to add some start up lines following this article.