86, I'm not much on changing what works well for me. If I did go to mechanicals (can't do it -- the fixed blade muzzys are too good) I would be suspicious of the wide cutting diameters. All things being equal, the greater the cutting diameter the less the penetration. I would put the $ to work for me in other ways -- new gear I don't have, a new hunting opportunity, etc.<P>The bottom line is, however, that it's your bow, money, and time. Have fun with it. I do see advantages to a shorter arrow if you can get away with it.<P>Twang 'em. Talus