Buy it all, figure out what works, return what sucks... that's what return policies are for (and incidentally is what happened to the last Belkin product I purchased, and why I'll never purchase another one).
That, or if you're buying for a business just remember: No one ever got fired for buying IBM, F5 or Cisco. Or HP for servers. ProLiants really do kick ass, although I hear Dells tend to use a little less power for equivalent performance... probably because they skimped on the redundant fans or some other "doesn't seem to matter until you need it" hardware (but that's pure speculation).
Or it's possible Dell equipment runs by feeding on the souls of the poor bastards that have to use it. Anything is possible.