Jeff,
I think you should really check out the 100 gr. 4-blade Phantoms. Cut on impact and the bleeder blades are as heavy or heavier than most replaceable blades. My buddy is shooting a Mighty Mite at around 280 and they fly perfectly. I'm going to be shooting the 125 gr. 4-Blade Phantoms on Elk this year. I'm really impressed with these heads.

PS-They are made by Muzzy....Cut on contact AND made by Muzzy.....How can you go wrong???

Oh yeah and from what I've gathered in my research, the QC has gone way up on these heads since Muzzy took over.....very sharp out of the package......