I have experience with KJW, TM and WE.
WE hicappa 5.1 is a big fat turd sandwich. Less than a dozen mags through it and the midframe is already cracked.
TM mk23 was rock solid but the plastic body and no blowback just didn't feel "right"
KJW 1911. Has been my mainstay sidearm for a few years. Lots of aftermarket parts on this one but it has always been a very good piece of kit. It's been a love hate relationship but I've had 0 issues with it that weren't a result of upgrade parts or user error and any problems I have had were solved.
~DEATH be not proud, though some have called thee Mighty and dreadfull, for, thou art not so, ~