I have not shot the overdrive but I own a knight and love it. Rock Creek Archery up there by you should have both for you to try? GREAT guy and he will take care of you and have you stacking arrows in no time. I was up there a year ago and was pretty sure he had Knights in stock, but again that was year and many beers ago....
If not what is your draw length/weight? Mine is set 30.5"@60# draw and I could always adjust for your length to let you shoot it a bit and get a feel for it..