I'd recommend Buffalo--I have an old G54 of theirs with DD-WRT on it, talk about a tank. The HP suffix stands for high power, won't help receive, but if you're in a noisy area it may help.
Personally, I'd keep anything business wired--but as long as you stay away from unsecured (and WEP, for that matter,) you shouldn't have any problems.
I'm with you on 8--not a huge fan of 7 or Vista.