Here are a few of those preconceived ideas that, while probably have some truth, get thrown around too often, and too often problems (or successes) are blamed on these ideas:
Motorola makes devices that can survive a nuclear bomb and radios to go along with that.
HTC's are just cheap altogether.
Samsung makes pretty devices, but cheap materials, and boy do their radios suck.
LG... well it's LG... they're all cheap.
And I'm in the exact same boat as you k1ng. If it's based on experience, the Rezound kills the competition (at least early on anyway, when the others struggled so much). I've had every LTE phone since the Bolt (except the Charge), and the Rezound is the only one that, from the start, had very few issues with holding onto data. I'm sure the antenna stretching into that cheap back cover helped. I could say the same for the Inc2 - one of the best pre-ICS 3G devices out there.
Again, "tradition" is typically based in some truth, but we can't just assume any problems (or good things) are based on these preconceived ideas that are thrown around so often.
Edit: shouldn't it also be telling that radio software tweaks have fixed most (not all) of the problems on the devices that have struggled? The coding and algorithms that go into these things (4G, 3G, 1X, etc.) has to be more complex than ever before. And then there's also Verizon...