I don't have experience with the EE, but after researching quilts went with the UGQ Bandit XL last season. ....very impressed. Quality & Comfort are top notch. I recommend getting longer and wider than you need for when it gets colder ...you can easily tuck inside and wrap it around you when pushing low temps. I also recommend the zippered foot box and getting the dynamic tension control.... zippered foot box helps when temps get warm and you want to use as a blanket more than a bag. tension control reduces draft when you run as a traditional style quilt.
I went with 850 fill, 0 deg F, Bandit XL, 65wide x 84long, as much overstuff as i could get in both the footbox & body, draft collar, no taper (awesome for guys that don't like mummys), and lite straps. The only option i didn't do was the extra spend for the 900 fill. ....not enough added value to me for extra cost.
The only negative with using a down quilt is the extra precautions you must take to keep it in good shape.... Single wall shelters create a lot more external condensation so you need to be mindful of conditions and shelter choice. Last comment... with any quilt, run a good pad!
One last thought.... I have ran the quilt close to 50 days +/- (in field + in house) in temps ranging from -8F to 72F.... the only thing I change, is the pad I am using and the layers I wear. Also, when running in a SO shelter where condensation was a problem, I covered it with a kifaru woobie to keep it from getting wet. ....so comfortable I would have slept through the hunt had I not set multiple alarms.