I did that and also read the excaibur pamphlet and the only thing I can see is mass weight Ibex 6.2 lbs. overall lenght 36.4", Phoenix 6.3 lbs. , overall lenght 37.5" and Axiom 6.0 lbs. and overall lenght 37.5" everything else is the same. But the price is very difference so they have to have something?