My girlfriend and I have taken her laptop to Bill on two separate occasions (first time for a destructive virus, second time for a nasty spill we had), and we had/have no complaints whatsoever. We originally chose him after scouting around and doing our homework because his rates were so competitive ($45 an hour cannot be beat). Upon meeting and doing business with the gentleman, I can definitely say we would go back if we ran into any issues with either of our computers in the future (and yes, although he works on PC's, primarily, he does handle some Mac repairs as well). He runs his shop out of home, and he's been doing this line of work for longer than most of these guys on the "geek squad" have been alive. Some people might misread the small-scale/simple appearance of the shop as incapable, but this couldn't be further from the truth. Not everyone wants to work out of a high-end shop or have to deal with a rotating team of snotty employees. Professional Computer Repair is small and somewhat discreet, in terms of work-space and location, but the rates are completely affordable (even for struggling students!), the repairs were reliable, and the service was cordial and personable. If you're considering a repair, give Bill a call. It's a little tricky getting there if you don't know how to get to Milwaukee from inner-southeast, but this is hardly worth mentioning since my girlfriend and I found the place without any trouble.
Pros: Affordable, Fast, Reliable, Friendly. A+
Cons: None that I can think of.