Oh man! I absolutely fell in love with my DLX. So much so, that I bought another for my new bike! It's incredibly light, and does everything I want it to. It's nice and narrow, so since you use two panniers rather than a trunk bag, the CoG will be closer in and won't tilt your bike left or right as much as other, wider racks. The bontrager looks overengineered to me, too many points that could fail (I counted 24 welds vs 16 on the axiom) and too many tubes that add weight. I'm not a weight weenie, but when the lighter one is cheaper and better, I'd go for that one. It also has twice the weight capacity as the bontrager - I've comfortably sat on mine that was attached with P-clips on the seatstays (I weigh 120).

Go for the axiom