Interesting, I too plan to order the Abus NutFix for wheels and seat. As for U-locks, the reason I started this thread is I'm debating between the Abus Granite 54 and the 540. Besides the weight and cost difference, the 540 (9") seems too large because it would leave a lot of extra space. But the 54 (5.5") is rather small and most often would not grab the wheel, only the frame and bike rack. I've been using a 7" OnGuard Bulldog for years, and while not the best lock it's the perfect size. Maybe I should just upgrade to the OnGuard Pitbull Medium? Same size but better lock.

P.S. My wheels are not so valuable. I just don't want the hassles of replacing things!