ive tried/owned several guns over the last six/12 months, and personally went with the M&P9 with apex fss polymer trigger
tried:
m&p stock/flat faced trigger/aluminum curved/daek trigger etc.
glock 17 gen3/4, and 19 gen3 -- various connectors, backstraps, agency trigger, zev trigger, etc.
ppq/ppx with various recoil springs (best striker fire out of box trigger ive felt)
vp9 stock
p320
sig226
fnx45t
the only one i wish i kept was the STI Tactical SS4.0, but the $2k i had into was too much capital