My bike originally came with a set of Bontrager Race Lites. My back wheel never held true for more than a couple of rides. So, my LBS replaced the back wheel. The second wheel was better, but still needed more than the occasional tweek. Then, more recently (a year later) the wheel started creaking and squeaking like crazy. Once again, my most excellent LBS replaced it, this time with a Race Lite Aero because it better matched the front wheel. This new wheel doesn't hold its true very well either. At 6'3" and 200 lbs, I am clearly either too heavy for these wheels, the wheels suck, or a bit of both. My question is what are some comparable wheels (both in price and weight) that will hold their true better? I don't race and tend to ride about 150-200 miles a week. Thanks in advance for your suggestions.