They might, FG. I really don't know, but I definitely liked the way the Ultra 4 handled in comparison - and a little cheaper to boot! I use it on an (ironically enough) Orvis SL 7wgt SLOOOOOW action, on warmwater streams. Maybe I got a bad batch, but I thought the coiling was a lot worse with the Wonderline, and I haven't regretted the change. Just my experience with it and personal opinion.
You are right, it is cheaper and that is a good thing. The new Generation 3 line is everything you want, I think. I just bought the new Hi-Flote line and for all you that are tired of the end of your line sinking, this is the bomb. Everything it claims. Thumds up!