RE: fixed vs. expandable
I'd rather be shooting than tuning! Last 9 deer I've killed (Including 4 book bucks), I've smoked with a Mechanical and haven't had to track any of them over 80 yards, any of them. Most fell within sight. I'm not really into challenging myself in the art of tracking. I like to start tracking my deer before I get down from the stand. Blood spraying 3' out of a deer as they run away is what get's me excited!
I've never clean missed a deer, and haven't wounded one in 5+ years (knocking on wood). How's your record with Fixed heads? Be honest!
There is absolutely no replacement for arrow placement! You must put it in the spot, that is the bottom line! Todays bows (65 lbs.+) have enough energy to do the trick with even the largest cutting diameters! Just don't shoot them in the shoulder or heavy bone! If you do, it really doesn't matter what's on the end of your arrow, you just had a bad shot!