Why? I wanted exactly the same as you did, but found the cheapest AP to be easily twice as expensive as a decent router. So I bought a TP link router with the idea of installing DD-WRT or Tomato onto it. Turned out I didn't need to. If you switch off the DHCP function, most (all?) routers switch back to a "dumb AP mode", so that's what I did. The TP-link has been an AP on my network for more than a year now, and has never failed me yet. It's ethernet ports are Gigabit too, and the whole thing cost me 35 euro. OK, so that was the TL-WR1043ND which isn't dual band (I didn't need that), but they've got dual band models as well, eg. the TL-WDR4300 which costs about 60 euro.