Thank you kindly [MENTION=38510]Scooper[/MENTION] - that WAS an excellent link. I think my dissatisfaction with my current bike stems from two aspects of its frame. First, I have a "compact rear triangle" with short chain stays. This might be a blessing when climbing, but for all-around use, it profoundly suuuuuuuuuuuuucks! Second of all, I have what I think is a fairly upright head tube (I haven't measured the angle, but I think it's really up there). Again, this might be a blessing when climbing, but for all-around use... There's also an angled top-tube to minimize the wheelbase. The combination of these things makes it a fine mountain bike (potentially) but a really sucky commuter.

I may have to let this one go & pick something more roomy. Thanks again for all the good info.