RAM - utorrent eats up ram - DD-WRT leaks (so does stock) firmware like a mofo.
64meg is light the wrt610n has 128meg. If you rolled you own pfsense router you'd use a 512 or 1gb (or more?) so think about that.
the airstation is very nice - super high power DD-WRT out of the box. but if you can stomach (and use it as an AP only) the trendnet has a 450 on 2.4 and 450 on 5ghz model. so you can run some folks on 2.4 and get 25MB/s and some folks on 5ghz and get 25MB/s.
reference: E4200 linksys in same range gets about 12-14MB/s
Buffalo WZR (2.4 only) gets 16.5MB/s
Power output on WZR is 840mw (!!) on 2.4 or 5ghz that a metric ton!
E4200 uses omni's built in - Buffalo uses external 2dbi directionals - which use standard plugs so you can bust the case open and hook up 25dbi yagi directionals and fire that power up to 1 watt (1000mw) and set up a ethernet over IP bridge and rock a mile link

ethernet over IP bridge covers all protocols. no problems bonjour over wifi . rocks.
buffalos come with commercially licensed DD-WRT out of the box! you don't need to load unsupported firmware and risk bricking. plus i think you get something ? for commercially licensed copy i forget? kudos?