Wish I could of helped you. Recently picked up a alpinelite myself on sale, first time I ever saw a solid sale for them. Here are a few links that may help you. Let us know what you decide.
Almost bought from here. The free overfill and a great deal on a pillow were key.
Right now they are having a sale on Marmot. I personally, havent seen the plasmas that low in price.
They also have WM...