Greetings Jason!
When I replaced my A & E Travel Awn 5000 in 2001 after the roller tube failed for the third time in five years, I went with Zip Dee. One thing that helped to convince me was talking to two long-time Airstream owners, one with a '64
Sovereign that was purchased new by them, who related the tradition of exceptional customer support available from Zip Dee - - when I had contacted A & E regarding parts for my previous awning the response was basically that the only part still supported was the roller tube - - the arms and related parts were no longer available in part or whole. Another thing that influenced my decision was that Zip Dee was the only manufacturer who offered the side arms with proper curvature for my '64 Overlander at that time. The quality difference is absolutely amazing. The Zip Dee is far easier to setup - - it was a struggle for a Free Wheeler to setup the Travel Awn if the ground was the least bit uneven - - the Zip Dee, however, it a joy to setup. One last thing that greatly impressed me was how Zip Dee's factory walked my dealer's representative through the precise method for measuring my coach for its new awnings (I splurged for curbside and two window awnings) - - my dealer wanted to be sure that the fit was correct and since they didn't sell Airstreams in '64 they contacted the factory for precise instructions.
The Zip Dee has far sleeker hardware than A & E and some of the other manufacturers who once made awnings for Airstreams - - the tubes on the Zip Dee arms are more nearly square in comparison to the rectangular arms on the A & E that I had previously (Carefree of Colorado arms were also similar to the A & E arms). In addition, at least in comparison to my A & E, the Zip Dee stores much more securely against the side of the coach for traveling - - there are two latches in addtion to the arm latches that securely attach the awning to the side of the trailer for travel - - on three seperate ocassions, my A & E awning broke loose while underway and began flapping in the breeze (very unpleasant situations when traveling on the interstate {on the way to Boise, ID in 1998; on the way to Bismarck, ND in 2000; and on the way to Sioux Falls, SD in 2001}). Last year while traveling on the same strech of Interstate Highway in similar wind consitions, the Zip Dee wasn't in any way disturbed.
I have also found the Zip Dee awning fabric far easier to keep clean. I believe that this stems in part from the aluminum protector cover that automatically covers the awning as it rolls up. I was a bit skeptical of fabric rather than vinyl at first, but I am now a firm believer in the quality and durability of the fabric that Zip Dee uses in their awnings. There is also remarkably little drumming and flapping from a properly setup Zip Dee Awning - - my old A & E tended to make a terrible drumming noise whenever even a modest breeze was present - - it takes an aggressive wind before the Zip Dee drumms or flaps and that is a pretty good indicator that it is time to retract the awning.
Good luck with your decision!
Kevin