I was very happy when Pet Supplies Plus opened up in Champaign. I had shopped at a Pet Supplies Plus in northwest Indiana, and I was very impressed with their selection of high-quality cat food. There are a few good places to purchase pet food in C-U, but very few of them have a comprehensive selection of "the fancy stuff," and I do not have the time or the patience to go to three different stores to buy cat food for my picky-ass felines.
The Pet Supplies Plus in Champaign is smaller than the one in Dyer, but they carry most of the same products, including several lines of cat food that were previously unavailable (as far as I could tell) in the Champaign area. They carry the Merrick's dry cat food (but not the moist, although I think they had it when they first opened), Innova, Instinct, and this kibble called Taste of the Wild that makes my cats completely insane. The selection of toys and litter is decent enough. In addition to the fancy-pants brands of cat food, they also carry the usual brands (Friskies, Meow Mix, 9 Lives, Fancy Feast, etc.). Prices on these products are on par with the other stores in town, and a little cheaper at times.
Pet Supplies Plus also seems to be partnering with Catsnap, a local cat rescue, to raise money, collect supplies, and encourage pet adoption. Catsnap shows cats and kittens at the store on Saturdays, and there's a collection bin for cat supplies.