The longer the ATA, usually the more forgiving a bow but with todays longer brace heights, the shorter ATA bows sem to be forgiving as well. Prior to just ordering the Bowtech Allegiance, 34 ATA I've never shot a bow under 36" ATA which is what the Trykon XL is at. The standard Trykon at 33" inches however does bost the same reflex geometry with only a 1/2 inch shorter brace height. I recommend a longer draw length shooter shooting the shorter ATA bows, use a string loop which I find unnecessary on the longer ATA bows however, it comes down to personal preference. Oddly the shorter Trykon only boasts a 2 fps speed difference...so, it comes down to your preference in bows.