I have a Martin/Howatt Diablo that shoots great. It's 60" 50#, draws very smoothly with no noticable stack (but then my draw is only 28&quot, shoots what I would call very fast, and is almost silent. So there's my take on Martin.

Now as for Chek Mate, I currently have a Crusader on order and can't wait for it to get here. I have never actually shot one, but there is quite a following for them on this message board. After reading all the great things people had to say about them, I just had to have one for myself. If you do decide to go with a chek mate, Chad (LBR) is great to work with and will set you up with pretty much whatever you need.