It's hard to really get excited about a dry-cleaning place, and I'm not about to start here. But Gateway Cleaners is reliable (thus far) and hasn't ruined any of my clothes yet.
I just checked with my girlfriend, and she said the same thing: in a year they've been wholly mistake-free. Excuse me for a sec while I go knock on wood.
It takes two to three days for your clothes to come back to the store (a few days longer for suits and, I'm told, dresses etc), and the proprietors are usually spot-on with their guesses as to how long you'll have to wait. They also do great alteration work and have laundry service, too.
The same woman is there every day, and she's super-nice and friendly, which is obviously always a plus.
I'll continue to rely on Gateway Cleaners for as long as, well, I live in the Gateway area.