I have only gone to wheel connection for mounting/balancing purposes. Why are they sucky if I may ask? I saw a lot of Porsche wheels there so I figured someone must trust them.
I sent a set of wheels to them to repair after Bill's Tire monkeys screwed up, not one, not two, but all four of my wheels. After being assured by Wheel Connection that they could make them look like new, after explanations that the bright silver paint used on them is a special mix and would be expensive to match but that they could do it (which I said, "OK, as long as they look like the original color) and after being told that the sputtered finish on the wheel lip would look correct, I instead received a set of dull silver painted wheels with the sputtered lip done with a piece of sand paper and clearcoated. I was pissed, especially when I waited 5 weeks for them to perform their "magic" on my wheels. Furthermore, I never received my metal valve stems back from them - when I contacted them about them, the stems were gone and I had to buy new ones out of pocket.
Their suck factor is huge!