The Allez frame to get is the E5 AEROTEC. The last ones were in 06' on the Comp triple, Expert, and pro along with the 07' Expert and pro only. Everything else is regular SLX or A1. I've been riding this frame for almost two years now and cannot see any benefit in something different. They are great frames, but it does appear Specialized is no longer making "top of the line" aluminum frames anymore. The Allez is just a beginner model now with a cheaper frame.