A perfect top quilt if you know the limitations of quilts
The craftsmanship in EE quilts is excellent. I've been using my Revelation for almost a year and it is probably the most comfortable insulation in my inventory. The fabric is soft, but has not lost a single feather, the stitching is superior, and the baffle structure does not allow for cold spots (read more about the toe box below).
Having read some of the negative reviews here, I want to address some issues people seem to have.
1) No top quilt made, or sleeping bag for that matter, will overcome a sleeping pad with an R value inadequate to your use. If you are sleeping in sub-freezing temperatures with an R3.7 or the like, you are going to get cold even in a -20 bag or quilt. Take something like a Therm-a-Rest XTherm with a 5 or 6 R value, and don't blame the quilt for heat lost to the ground.
2) A quilt is a quilt. Tuck it around you, or heat will escape the sides (even if strapped around your pad. If you can't handle this, then get a mummy bag and carry the extra weight. Top Quilts are for hammocking and lightweight/ultralight backpacking.
3) This model has an open toe box that cinches closed. Some heat will be lost. The upside is that you can open it up completely and use it like a blanket - great for a wrap while cooking breakfast on that cold morning, but bad for sleeping in temps at or near the rated low of the bag. Wear some good socks and this will fix your problem. I like the possum down socks from Zpacks for sleeping socks. Or, you can pick one of EE's other models that has a fully closed toe box.
In general, if shaving weight is not your primary objective, then always get a bag 10-20 degrees colder than what you think you need. Down is great in that it won't overheat you until it's just much much hotter than it's rating. It regulates heat far far better than synthetics.
Quilt and sleeping bag ratings are NOT comfort ratings. They are survival ratings.
So, to sum up, if you know down bags, and understand top quilts and their limitations, EE's quilts are outstanding. The fabric is perfect and the craftwork is top notch.