cloud9, the best 3 blade mechanical head I have tested is the shockwave. It has a 1 1/4" cut and penetrates very well. Rocket sidewinders are pretty good as well, but the blades are not very sharp. The shockwaves are tough, sharp, and accurate. They are not quite as big as you were looking for, but believe me I know they will do the job, lot's of guys here on the board used them last year with excellent results.

TAKE YOUR KIDS HUNTING AND YOU WON'T BE HUNTING FOR YOUR KIDS