RE: Diamond Bows??
Having ordered both, I prefer the Marquis over the BI personally but let me go on the record as saying, I'm not a fan of very short ATA bows. The Black Ice is an incredible little shooting bow, key word, little. For those loving the short ATA bows, it's for you. The Marquis on the other hand brings both a shorter ATA and shootability with speed, quietness and very little vibration. I feel it's the best bow in the Diamond line up however, short ATA bow enthusiast can say that about the BI. Either way, it'll be fun deciding for you and you'll be happy either way.