TZ really depends on your taste.  You either love it to death or hate it.  Personally I've had mine for 12 years and would never part with it.  it would be the last pin to go along with TSPP. I get totally engrossed in it and the challenges that are all over the playfield, but many of my friends don't want to know it.  Its too messy for them.
But there is no question it is a stand out pinball with so much work in the design.