+1 on Rcers comment. I have the PZ T-28 version and while the FMS and Durafly are sexier with more bells and whistles, the PZ T-28 is a brute. I've souped mine up with a bigger motor/esc combo and modded out the LG for bumpy grass fields. The weak point of the PZ is in fact the stock nose gear. If you like retracts, forget about grass fields altogether. And there's no free lunch on paved runways either. A hard landing on a paved runway will break the retracts.
Your LHS will carry parts for the PZ version. You'll have to wait on the boat from China to get parts for the others in most cases.
Good luck on whichever you decide. I love this plane !