Bowtech makes great bows, the binary cam is a lil different than the Mathews that you are shooting now, but it is alot faster too.
Try the Bowtech line out, I am glad I did.
If you still like the single cam bows, the new Diamond Black Ice and Ross Cardiac bows are both above 315 FPS IBO speed and are great rigs too.
New Breed Archery-Genetix 28.5"/ 60lbs & 365gr. = 285 FPS
New Breed Archery- Eclipse 65/28.5" & 370gr. = 291 FPS
Bowtech- 82nd Airborne 28.5"/ 60lbs. & 325gr. = 327 FPS
Strother Archery- SR-71 28.5"/65lbs. & 370gr. = 303 FPS