if you like the feel of a glock and aren't really hung up on looks get a KWA ATP. they are very inexpensive and are amazing shooters.
I had a TM g18C that was upgraded to the tits by someone here on the forums and it would barely empty a mag.
The ATP gets three full mags of shots with one fill of gas.
However if you keep the plastic slide and run duster i'm sure the TM will last a long time as thats what it was designed to use.
Sorry if that was a little sporadic.