I use Dream Green and I really like it. I purchased a roll some time ago and am still working my way through it. FYI Quiltbug has rolls on sale for 20% off. You can check their website - they carry a lot of different battings - and figure for yourself the comparative costs. Some of it, of course, depends on what size you need. 60" wide does fine for my purposes. Here's the website:
http://quiltbug.com/