I own a KSC G19. Love the feel. Haven't had the chance to handle a TM Glock but I have handled what I believed to be a TM M92F as well as a TM Hi-Capa 4.3.
If you're on a budget or are very cost aware and using it as a backup/secondary go with the KSC. If you're thinking of making it a primary or have the cash to spend then none better than the TM. This is however judging based on the feeling of the other TM GBB lines and not specifically their Glock model.
ಠ_ಠLess QQ more Pew Pew
READY TO >> RACE