Not even a contest IMHO. All locations in Madison are super great and this is coming from someone who has no vested interest in them. I/O arcade visit a month or two ago revealed a great collection with awesome pins, though very few food options (no kitchen). Blue Moon Arcade and Grill has a great collection of 5-6 pins I think and some of the best burgers and beer I've ever had. The list of locations is too long to list here (by me at least).

When we stayed in the Dells, I don't think I could find a single pin, but that may have changed. And the food was all chain with nothing of quality like Mad-town has.

Last year I stayed at the Hilton and the MGC parking rate was on my bill when I checked out because I had stayed as part of the MGC block of rooms. Not saying you can’t get the rate without the stay, but it might be difficult.