Well, since I started the thread, I’ll let you know why I was interested in a quilt.
My original thinking was that I could find a good quality quilt w/ similar loft to the WM Highlite for lower price & weight (thinking removing the hood and some stitching, bottom, etc). However, the only lighter weight quilts I can locate are more expensive.
I’m now leaning toward the FanaticFringe 40 degree quilt, as the 50+ degree nights we’ll have around here (Indiana) for the next several months will be just too hot for any bag without plenty of ventilation options. The Highlite has a 1/2 zipper. The other night I had my current bag totally unzipped, and only partially covering my shoulders.
So for my summer “bag”, I think a quilt would be ideal and far more useful over over a wider range of temperatures.
If I had an interest in sewing a bag, I’d certainly check out the RayWay designs. Maybe someday.
BTW, the SpeerHammocks people seemed to have the perfect quilt (light, cheap, high loft), but they told me in an email that the quilt wouldn’t work for ground sleepers.
So I’ll probably suck up the extra 6.6 ounces between the FanticFringe and WM options but happily pocket the $100 difference. Should still remove ~13-14 ounces from my current pack weight.
So thanks for everyone’s suggestions here.