I have had mine for about 2 months and I absolutely love it. I bought it based on reputation alone as I had never seen one before. I, like you, wanted a lighter draw that would shoot as fast a bow of 5-10 lbs more. I truly believe I found it. One of the earlier posters said the ACS is not the fastest out there - well I would like to know what is faster? Please tell me.
Mine is ultra accurate, stable and VERY quite. This is what most notice - the lack of a significant report on upon release of string.
My buddy and I took ours to a local shop to chrono and the guy in there said...."let me guess, 165fps" as he was pulling out the machine. I just smiled at him and said "I hope not"!
My 50lb@28" 3 piece 64" shoots a 29.5 inch Goldtip 55/75 of 425 grains at 195fps. My buddies arrows were Carbon Express and his bow is a 51lb at 28 but he pulls about 29" with his 66" ACS so is about 54lbs. He was getting an honest 205fps with his 460 grain arrow. To me, these bows are the best available!
Good Luck,
James