Originally Posted by jbhowat
The Allez and S-Works E5 are not the same frameset at all. The E5 was designed a few years ago and hasn't really been updated. The Allez has slowly been evolving towards the E5.
The Allez is made with "E5" tubing which is not the same tubeset that is even used in the S-Works E5.
The Allez has a carbon seatstay (thats the word) and while this may dampen vibration a little (debatable) it does add weight and does NOT make it the more advanced or better frame. It makes it more cushy for more casual riders. The E5 is the more hardcore race bike. Its is stiffer, lighter, and better than any Allez bike on the market.
You have a link or anything proving this? From what I've been told and according to specialized site they both use the same E5 tubing, I'd be interesting in reading more on this issue.