If there's an REI near you, they should have one in stock.
I use the Lamina 35 for a summer bag.
My only gripe, is the zipper is "bitchier" than Western Moutaineering. But then the bag is under half the cost of a WM. It's cut bigger for a mummy bag, which is a plus for me...
[bleep], if you wanna borrow mine for a week, PM me. I don't need it until end of May.