Just did some more research and this is what I found.
Kokatat offers another option called the Supernova.
Has a neoprene neck instead of latex. More comfortable, but not as water tight. And uses Tropos 3 fabric which is another version of Gortex without the Gortex price.
Check it out here.
Supernova $609
http://kokatat.com/product_detail.asp?code=sno
Here is another one to check out, and very reasonably priced.
Swift Entry $489
http://kokatat.com/product_detail.asp?code=tse