jimmy here is what i was told by my rep. This info was over a quick phone call as we were both getting ready to go hunt, so i just wrote down what i could. Here we go. AS400= 34" axle to axle, 320 ibo,7" Brace H. I currently shoot this bow, and it is a great shooter. The AS100= 27 3/4 axle to axle, 312-315 IBO up to 29" draw, very smooth. AS200 is suppose to be just like the Murader, but a little faster and a little smoother. AS300 31 axle to axle, speed ??, Brace H. ??? The Pro Seriesare suppose to all have pivoting limb pockets?? PS200= 320 ibo, 7 1/4 brace h. PS300= 332 ibo, 6 3/4 BH with a deflexed riser. PS400 and 500 are going to be between 37 and 39 axle to axle and shot between 315 and 320 ibo. and have relexed risers. I am sorry that i don't have more info, and this is all just what I was told, so stuff could change. I do know that the PS bows are suppose to be more hightech than the AS. If they hold up to the hear say they should be awesome.