I also want to know the specs comparison...

no differnece between TP-Link WA5210G v1 and v2

I use bandwith control with my wr740n routers, not 5210. If I dont do this I wouldnt have internet. My son starts 20 torrents, watch youtube, chat on fb and play net game same time. I asked him how he could do all this same time.... hmmm kids. There are 7 people who also use my net and a lot of devices (even Pioneer audio receiver and 2 smart Samsung TV-s, etc... Irons, cookers and fridges are still netless). Discovering bandwith control on TP-link devices was solution for me. It is not so simple, you have to tweak bandwith min and max, but once you find sweet spot it is wonderful. Everyone has sence that have unlimited net speed. Bandwith control on cheap TL routers works great!