When a buddy and I first got clones I picked a G372xp and he got the G660.
First off the 660 clone was pretty much ready to run strait out of the box, my 372xp needed an oem carburetor to run.
I've ended up finding 2 MS660 Stihls in scrap yards and restored them, and they run great for a 92cc saw.
I always thought the 395xp was the top dog of big saws that weren't crazy heavy ; up until I spent some time with a 592xp!
The original 372xp clone I bought has been incredibly reliable and tougher than expected, I ve dropped 100s of trees with it and let novices use it . Early on I ported it and gave it compression and it has soldiered on.
Every one says they blow the bottom bearings and crap out if pushed but I think if your not a ham fisted hammer donkey they'll obviously last years.
I have run hundreds of saws at this point and it's not difficult to get good results from any of them, clones included.
Dec 2020 still working in its original configuration.