We have a specialty shop here that sells a huge variety of car care products in different price ranges, as well as they provide detailing services. Their detailing area is like a clean room.
Some of the stuff they carry cannot be found at your average retail chain. A lot of this stuff is not any more expensive than the crap at CT, but works way better. For wheel cleaners, I haven't found anything that works as well as the Sonax stuff. It changes colors as it eats away the brake dust. They have similar products at this shop for tar and iron stains.
I certainly haven't been back to a retail store since this place opened. Their staff is also very knowledgeable and can help you select the right product.
