Yes! Lots of experience between my brother and I.
First of all, the ZMC is adored by BMW Fanboys, while I get the feeling that the 3200 is a bit like the ginger stepchild of the Maserati world.
Secondly, the ZMC is very well build, unlike the 3200 (with apologies to 3200 owners)
Thirdly, parts for the ZMC are widely available unlike for the 3200…
We owned a G-Power Evo ZMC for about 5yrs. It was LHD and was the first car that G-Power built to compete in the Hockenheim Tuner GP. They must have done a decent job as the car came second, only beaten by a Gemballa tuned 996 GT2…
It had a supercharged S50B32 engine making 500bhp and a 6-speed box off an E36 M3 - contrary to what they say, the 6spd box fits like a glove. Stock ZMCs are a bit too soft and snappy on the limit - ours had custom valved Bilstein coilovers. At the time they were the best, but the new KW V3/CS are even better. The braking system was updated with MovIT brakes and discs - adapters, 993Turbo front calipers and 996 rears on custom bells for 993Turbo front discs and stock BMW rears. Ours had Recaro SPG carbon seats and a Heigo rear cage as well as custom 2-piece Breyton wheels. There were tons of other mods to make the whole car work reliably like extra cooling for the diff and gearbox, lower compression pistons on stronger rods, but we are going off topic here.
My brother fancied a Dodge Viper so he bought my share out of it and sold the ZMC to import a mint Dodge Viper from Miami. We are still in touch with the current owner of the ZMC.
You didn’t say what engine yours has but two things to watch out for:
S50B32 - vanos bolts
S54B32 - conrod bearings and headgasket failure
Being a parts bin special between the E36 M3 and the E30, knowledge and spares are everywhere, and most importantly cost peanuts compared to Maserati. Last but not least, the cars don’t suffer from weird problems that Maserati sometimes do because of numbers produced and testing and development having been honed over a much longer, and cash supported period. They aren’t issue free, but the sheer amount of available knowledge out there would overwhelm you.
Heck, a full genuine BMW diagnostic software, which would also calculate and display genuine plan of action on your laptop is available for free!! You only need to buy the cable for £15. Try that with an SD3 for Maserati.
All in, they are a great and fun car to drive. Values for sure are going one way. With the potential release of a new breadvan by BMW, interest would only continue to rise. Enjoy your new toy!