Congratulations on your draw. I shot my elk last year with a Grizzly Stik samurai (2 blade single bevel). 150gr head on a 500gr total arrow. That said, I've switched over RMS Cutthroats and will probably try the new Boner Broadheads which are very similar to cutthroats in construction but have a curved blade. They are a little narrower which should make tuning a breeze and be less effected by wind. For me accuracy is more important than an eight inch in the wound. Either way, if you are shooting carbons or alluminums I would definitely go with a one piece single bevel. One piece eliminates any error with being glued on to your insert perfectly or ferrule alignment inconsistencies. If you are shooting wood shafts, any of the tried and true glue on single bevels would be the route I would take.