TM just make a better pistol for the money !
to put that in to context, the TM hi-capa as an example is about £130ish, most other brands of hi-capa are 20-30 quid less, but the TM, even though its polymer, has superb quality, everything fits perfectly, no rattle on slides or other parts, & generally it will function flawlessly in all but the coldest weather.
the other brands, WE, KJW etc, while mostly metal, will be bit rattly, not falling apart but definitely a noticeable difference in the build quality, & the performance won't be as sharp, nor will the accuracy as the hops aren't generally as good.
now these issues can be addressed, loads of aftermarket kit available from frames, slides, hops & alsorts of other goodies, but nothing's cheap, so if your after a pistol that is 100% skirmishable straight from the box, the TM is the one, yes it's a wee bit more expensive, but often buying cheaper is a false economy if the cheaper gun doesn't do what you ask of it.
lots of sayings come to mind, "you can polish a turd, but it's still a turd", or "you can't make a silk purse out of a pigs ear", often the reality of buying certain models from other manufacturers.