Large diameter thin wall aluminum tubing is great stuff. The one problem that I found as far as durability was it propensity to getting dinged. It does not take much to dent the stuff, granted the resulting ding is only a cosmetic blemish and does not affect the structural integrity of the frame. But if you treat your equipment roughly it will show a lot more wear and tear than any other frame material. I finally had to give up on AL and switch to CF since it stands up to more abuse.