IMO, if your a target/3D shooter, speed and power aren't nessesary. One would use a "deflex" type of bow as oposed to a "reflex". In a deflex design, the riser is father away from the string, and way more accurate, and definatly more consistant. Also no need for an over-draw, as it will hinder accuacy. The real good shooters use a long axle-to-axle "deflex" bow, with either round wheels or a solo-cam ( as 2 radical cams hurt accuracy) at a low poundage, and typicly carbon arrows, and large quanitys of stabilizers.
I occasionally shoot 3D, but not in competition anymore, no time. I used my huntin' bow, its a Hoyt Smoke (extreme reflex design, and radical cams @312 fps on my crono) short axle length, and high poundage ( 94#'s) the advantage of high poundage to me is that I use one pin, out to 45 yards, and for huntin', I dig it. I only need to hit the vitals, so pin-point accuracy isnt as crucial, however I have Robin-Hooded several $15 arrows.
I tried carbon arrows before, and wont use them again, with high poundage bows, when I shot, my bow sounded like two silver-ware trucks crashin', that can't be a good thing. I shoot Super-slam, 480 grain arrows, with feathers, not vanes, which I build, as do I build all my own strings. Damn, I cant wait till bow season.
Later, Rob