I live closer to Champaign, and have been enjoying the Jarling's Custard Cup there for a few years now. I recently also visited their Danville location. I understand that there is some kind of "rivalry" between fans of each of the two locations, kinda like fans of the Cubs and Cardinals. But, I'm sure it's all good fun, because as far as I can tell, both locations have excellent frozen custard deserts.
Jarling's is the first place I ran into the idea of "cold fudge". It's just like "hot fudge", except that it doesn't melt the custard. Brilliant!
Several flavors of frozen custard are always available, in just about any conceivable configuration. I've always found the service to be friendly at both locations, and the treat to be just the thing for either a hot summer day or warm summer evening. Bring friends. There's really nothing like sharing an experience like this with friends. That's how I first learned of this place, when friends from work invited me along for a Friday afternoon "meeting".