TM Hicapa (4.3 is small, 5.1 is full size)...excellent gas mileage and tons of parts around. Hard holsters fit can be an issue.
TM Sig226. Not my favourite...but only because of how it fits my hand. Otherwise an excellent pistol. Gas capacity is ok, but not as good as the HiCapa. Metal kits aren't the easiest to come by.
TM 1911/MEU. Excellent pistols. Small gas capacity. Metal kits are hard to find, but the plastic holds up really well. Lots of parts around.