Fountain Square garage FTW! Cheaper than most of the parking (pay Stephen Hawking on the way out), it's monitored with cameras, etc, and while it's a bit of a walk (5-6 blocks), after the game it's relatively quick to get out of (as long as you beeline there) and you don't run afoul of most of the departing game traffic. I ALWAYS park there and I go to a dozen games a year. I'm goign tomorrow night in fact.