"Cesar, why the more expensive ZPack over the cheaper EE?"
1. Weight. Estimate of a 6ft wide EE Rev 40 quilt is around 489g without stuff sack, Zpacks long/wide 40 bag with stuff sack around 415g. I do a fair amount of SUL and a few XUL trips, most of which I took my old summer bag which is lighter (but in fairness much colder) than the EE quilt.
2. I know the brand. I have a lot of Zpacks gear, and have a hard time saying anything bad about them, and this is coming from a hardcore skeptic. The quality is excellent and service is great. I am not sponsored or get free or discounted stuff from them, FYI. For a big purchase and very important piece of gear, I didn't want to try out a new company--nothing against EE at all, mind you! I have heard a lot of good things about them.
3. I am a life-long bag man, not sure if quilts are for me. Skeptical about the drawstring foot box and straps and no zipper of quilts. Again, nothing against quilts, just not used to them, and didn't want to take a gamble. I have used wool blankets in the past when I was a traditional/minimalist camper and was not impressed.
4. Cuben roll top bag. Granted EE comes with a silnylon bag and storage bag, I'd much rather have the cuben roll top bag. I have a Zpacks roll top dry bag for my food, and love it. This is a small detail sure, but still counts for something.
5. Great reviews. I am sure there are great reviews out there for EE, but to be honest I didn't look into them much because the reviews (both from people here and elsewhere) were all very positive--this was the nail in the coffin to pull the trigger.
I put in my order just a few hours ago. This bag--aside from any replacements (and I hope this does not happen!) of broken or damage gear, and small stuff like socks, diddy bag stuff, etc.--is the last piece of gear I plan on buying in 2013.
I literally daydream about my spring and summer section hikes every day and can't wait to hit the trails! Now my list. Is. Complete!