Hi mate, I'm a newbie here need to do intro oops.
But just before Xmas dec 2012 I bought a party zone for 2K and when I got home did my research and found that dr dude was a sister machine to Party Zone. I went back and bought that aswell for 2k. I have hit eBay hard bought legs balls cleaning stuff and both machines are awesome we play em everyday. Kids 2 and 6 years love it.
I would say Party Zone and Dr Dude are both a lot of fun and wouldn't hesitate paying $2500 each loads of fun.