Most fixed heads such as TH's, Muzzy, Talons, etc will get it done. I personally prefer a COC style head now like a magnus stinger, steelforce, etc. Especially if your shooting a lighter arrow and BH. If you go with a COC look for models that have a bleeder blade vs just 2 blade. The biggest problem with bear is hair plugging the wound channel, my experience with most 2 blades is weaker bloodtrail, just as effective though. I'll assume you'll be hunting over bait, which means evening sits and the possibility of shooting in low light..so in this case abetter bloodtrail is nice.

I am not much for mechanicals.