Hey you will never know till ya do it, just get a CZ, you won't regret it. I'm of a mind that you don't choose CZ's, rather they choose you.
The only turbulent part is lefthand kicking over an 11.5/1 compressed 400 like mine, if ya make it thru that test & she's cackling away there with that sort of staccato bark that CZ's have, hook it into gear with that long throw shift, gas it & big lumps of earth break free showering anyone behind, hook 2nd - same thing again & the front lofts clear of the deck, 3rd gear - you instinctively shift your weight forward to try & keep that front wheel in contact with the ground, 4th - holy crap! I'm gonna die, fortunately there usually is a corner in the way so ya don't have to stay in top. The brakes do work too.
Spares?...Hey getting things for a CZ is the easiest shopping you will ever do, just an e-mail & payment & parts are on ya doorstep approx 8 days later. Here is the list of CZ suppliers from the good ol' USA.
NorthWest Maico & CZ
http://www.nwmaicoandcz.com/ (what? they still haven't got that site up yet!) I get my parts from these guys, last time I mailed them it was
[email protected]CR High Performance products
http://www.crhighperformance.com/ I haven't got stuff off these guys but have heard very good reports. Also good online window shopping.
Bertus
http://www.geocities.com/bertuscz/bertus_cz.html (hey Bertus has a website?) Never spoken to this man but he has been with CZ forever & probably has the biggest parts inventory in the universe. Only way to contact is by fax.
The Holy Grail is the Twin Piper model - never ridden one myself, my personal favourite is the 73's thru to 75 models.