Yeah, as a game South Park isn't great, but I love the theme and the look of the machine and have a vision of it in my line-up. Gave it a good play at Christimas time at Ulladulla Funland and still want it. I think the scarcity of it drives the collector in me. Seemed to be lots of them around when I didn't have the money and now that I could afford one, there's none on ebay.
Looking forward to playing Tron again, but I think the sticking point is soldering a hole in the ramp to install the Cliffy protector.
I've been playing Tron, South Park and Demo Man at Ulladulla Funland today myself. They have a Transformers there also but it was out of order.
Never played Demo man before today and I thought it was a fun game with all the ramps. South Park I've played before but it didn't do much for me this time around either. I really enjoyed the Tron the most out of their available line up and probably had 10 games of it while there. The only issue with it was the left flipper was a little sticky at times but other than that it played ok.