The TP-Link TL-WR1043ND is proving popular. It lacks some of the performance/features of the newer TP Link hardware. It also loses out to other high end routers in this regard, but it is priced at less than £50, offering a price/performance ratio that is pretty hard to beat. The DD-WRT website suggests that it is supported.
http://www.tp-link.com/en/products/d...el=TL-WR1043ND
Speaking personally, I am keeping an eye on the Asus RT-N66U. It is as yet unreleased in this country, and it seems to be suffering with some fairly serious firmware bugs at the moment. The hardware looks to be pretty impressive, and earns badgerpoints by having external antennae. I would imagine that third party firmware support is pretty likely in the future. It might prove to be a very decent router when all the bugs have been squashed.
Phil.