My Specialized Hardrock Sport is bombproof. Have ridden it from 430 down to 380-ish, about 700 miles in the first two months I had it. Not a single problem, other than some derailuer adjustments.
I just bought a new Trek 7.3 FX (today, actually..) and that seems pretty damned bombproof as well. Time will tell on that one, but it's going to be my new commuterbike.
Really, it's going to be up to the person. I went in looking at a Redline 925, but ended up with the Trek. Oddly enough, it came down to a choice between the FX, Bianchi Volpe, and a Redline Monocog 29er. The guys at the shop were adamant that of the sub 1k bikes they had, these all had the most bombproof wheelset.
Anyway, good luck. I'm not sure about the balance thing and how that would play into cycling. *shrug*