I go to school at the University of Louisville and leave my bike unattended at bike racks around campus for hours at a time. So far I haven't seen campus to have a real high bike-theft rate. It took 3 months for an abandoned Specialized Allez to be stripped down and the frame left to a cheap Bell U-Lock. In the fall I will hopefully start grad school at the downtown campus, across the street from the city hospital. Slightly more crime in my opinion. My bike is probably the nicest bike on campus and it really is my only one. There are a couple other nice bikes, Treks, 1.1, 1.2, 2.1, Specialized Tricross, and a few other older models. None worth what my bike is really but my bike has been stickered, reflective-taped, and decorated to look nice but not all "shinny and racey"

Currently I have a Trek Streetwise U-Lock. This is an older lock, made by Kryptonite and is 13mm thick and pretty long. I know that you want as small a U-Lock as you can to prevent leverage, etc by bike theives so my question is this: should I bother replacing this u-lock with a Kryptonite New York Fahgettaboutit Mini Bicycle U-Lock (3.25 x 6-Inch)? I have a cheap cable lock to secure the front wheel and seat security cable (U-lock goes through frame, post, and rear wheel). Is my current set up sufficient or should I get the better U-Lock that has 5mm more thickness and significantly less chance of being cut/broken? I'm leaning towards yes because as a grad student me = poor. But if you guys think I'm overdoing it then I'll take your professional opinion.