If you shoot the Thunderheads on Carbon arrows, you will need the UBAR's. The Muzzys are my personal head of choice. Infact I picked up 4 packs of the 4 blade 100 grn heads for 8 bucks a piece a couple of weeks ago. The 100 grn 4 blade has a 1" cutting diameter, but the total cutting surface is more than the three blade heads with a 1 3/16" diameter. The 125 grn 4 blade Muzzy has a 1 1/8" cutting diameter. It doesn't penetrate quite as well as the small heads with less blades, but it puts one heck of a hole in what it hits. My personal choice would be the 4 blade 100 grn Muzzy. To be honest though you won't go wrong with any of the choices, just make sure to use the UBAR's with the thunderheads, if that is the way you go.

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