+1 on the slight wobble with lower end components. I have aftermarket (lower end) hubs on one bike and it wobbles. (kinda tilts on an axis so to speak) where the bike with good shimano hubs is perfectly strait. You can test this theory as I have and go to your LBS and try it out. You'll probably see this happen with brand new bikes. They will probably look at you a little funny, but I'm sure it wouldn't be the strangest thing thy have winessed.