I'm 6'4" also, and had the same problem. No one was willing to special order a bike for me to "try", and in all honesty, I can't say I blame them. I found one place that had a trek 1000 in my size, so that was the only one I rode. When I upgraded I just had to go on the fact (hope?) that the same size frame would work out. It did. On the positive side, being a size that isn't carried frequently by LBS's means I can't make an impulse purchase decision, and end up with too many bikes than I need. Oh, wait, that's right-there is no such thing!