while trying to increase my speed here (2 ADSL slow, 1 cable fast) i tried a peplink balance 30 router..http://www.peplink.com/balance/tech-spec/
i paid, via amazon, with free shipping i think, about $379..
it set itself up for each modem and worked just wonderfully..
great firmware and IMO great hardware..
i returned it because my cable provider said he was upgrading and could provide 14Mb/s Down and 1.4 Mb/s Up for a small increase monthly..
so i will give up the slow and costly AT&T DSL and retain the cable which is really fast..
since i don't need 100% QOS i figured the Peplink Balance 30 was now redundant..
again, while i was testing it it worked FLAWLESSLY..
you should add it to those you are considering..
FWIW i too read the less than stellar reviews about the other makers.. try the Peplink 30 and if you don't like it send it back..