Thank you for all of the feedback...

My first choice is not to get a new bow. I am hoping that I am able to sqeeze out alittle more KE punch is all. I do not want to add speed at the expense of accuracy, or quiteness. My conern is that several other bows seem to generate the punch I am looking for. Certainly I hope to have shots at Elk under 30 yards. The terrain I am hunting at in Montana is hunting coulies, and there are lots of open meadows..long shots are not uncommon. A friend in my hunting group has taken several nice bulls from 35-63 yards. It is nice to have the longer shot in your bag, if you can make it consistently.
I am going to continue to play around with my CSS Challenger, and my arrow selcetion for now....

Again, thank you for all of the comments...