I was eyeballing the cz all american single really hard when I was in between trap guns, you will hear 'just go with a bt-99, not much more money,resale is better...yada yada' which there is some truth to, however when you price out bt-99's that have the same adjustability the price difference is fairly far apart, as with anything you can sniff out deals if you are patient.
If you are a casual trap shooter (shoot a couple rounds a week, a few fun shoots and maybe even 1 or two registered shoots a year) the cz will hold up just fine from judging from what I have seen from club member's experiences...and if something does break or is out of whack, good customer service is there it sounds like.
Now when it comes to high volume shooting, I couldn't really find any sound long term info on how they hold up with some serious rounds down the pipe and that's the only thing that kept me from pulling the trigger on one (that and I got a heck of a deal on something else at the time) when I recover from my purchase I still may pick one up.