RE: Diamond Bows??
I shot them both a couple months ago. I really liked the Marquis. Smooth draw cycle, fast. Good shooting bow overall. Black Ice was nice too. I just preferred the Marquis. The riser on the Marquis is only a couple inches longer, but it was more stable - in my opinion. The Marquis also comes with the roller guard and string stop, whichreally cut down on noise and vibration.
Good luck. Post pictures of what you get.