I was in your shoes a month ago. I racked my brain looking for the "right" bow. I looked at Parker, Diamond, and Reflex. I almost bought a Diamond, but then found a really good deal on a Reflex Super Slam. All three are good bows. I have fallen in love with my Reflex. It's fast and quiet with hardly any vibration.I don't think you can go wrong with any of your choices. Iwouldn't buy a used one unless I knew the previous owner. Good luck!