I have the GO. To be honest, I quit using it for strips even though I have possible every size. Mine seems to get a wrinkle about half way through and it frustrates me, so I just cut them with the rotary cutter most of the time now. I like the shapes for applique, but lately I can't find the time to work on any applique anyway.
I got mine at Joanns a few years ago. I think it was on sale for 199. Sometimes Joanns has discontinued dies on clearance for a really good price. I've gotten several off Amazon as well. When possible, I ask the LQS that sells GO products to match the Amazon price and if they do, I'll buy from them.