I've been on the soapbox so to speak on this point for awhile, but I think it bears repeating. I decided to try and stop squeezing my u-lock around the frame and wheel, or through the rear triangle, and just got some cheap locking wheel skewers from Velo Orange ($14). Now I just lock the top tube to whatever like the bike messengers. The skewers use a tamper-proof hex key to tighten, and come, of course, with a matching wrench. Not perfect, but how many bike/parts thieves are going to be that well equipped?
By the same token, I don't worry about my 15-yr old Cyclepro u-lock with the tubular lock, especially since I painted it yellow to look like a Kryptonite NY. How many bike thieves actually know the Bic pen picking technique? I'll probably get a mini-Bulldog just to look cool, but I've never had a bike stolen when it was u-locked.