ive shot the 60lb model. and ill be honest when i say, i liked it a lot. The only complaint I had was i thought it was heavy, but he did have it set up for 3D. shooting that bow made me consider a 60lb bow in the future.
All I can say is do NOT draw it without an arrow loaded (I know, you never should at any time... but ESPECIALLY with this bow...) and DO NOT creep. :D
I have the Monster XLR8 @ 70lbs and I will be honest it makes you get your form in shape. With the 5" brace it can be very touchy. At one point during the summer I was about to trade it in for a Reezen. I wasnt off really bad, maybe a inch or two but it was enought to where I just couldnt stand the fact of not hitting exactly where I was aiming. I would shoot a very tight group @ 20 yrds exactly where I was aiming then the next round same tight group but 2" left. I finally got things figured out and now I wouldnt trade it for anything. Smoking fast but yes it is a little heavy but its not bad once drawn back. Like said you almost dont want to pull it back unless you plan on puting one down range.