Hi all, got a question for ya'll. Im rebuilding my engine and now Im in need off new pistons. I want my engine to be quick. Ive lightend the flywheel got catcams and just ordered my dbilas TB kit.

Some dyno time is needed to make this all run effective.
But what pistons to buy:
M42 CP Forged Piston Sets, 10:1 CR
#CP-FPS-S42-10 $699.95
M42 CP Forged Piston Sets, 13:1 CR
#CP-FPS-S42-13 $749.95
Seems good but never heared of them
metricmechanic
Sport Forged Alusil Vented Pistons10.0:1
$175 (each)
seems excellent but they mistakenly thought I wanted stock pistons and now they dont respond to my question if I can buy from them, really weird.
bavauto
B1251721449N
MaxSil High Performance Piston Set - 84.48mm - 0.50 oversize $439.95
Really cheap but dont know them...
So what are your experiances with these piston suppliers and which do you use??
Any input is greatly appriciated