So I just got my NS SL in and looking at some new bindings for her. Then I got to thinking I will just use my ride ex binding on the SL. Allowing me to get some new bindings for the k2 Parkstar I also have. I ride the Parkstar more for freeride/mtn freestyle not in the park really at all. The Deltas have a little edge over the Formulas with the 2.5 wedge in my mind. As I have never rode any of these bindings just looking for input.
so ..... I went kind of crazy and got the deltas and formulas I will try both of them out and sell the other one I dont like, or I may end keeping both and selling my ex. Thanks to everyone for all the great input.
I'd say Deltas. They work well with a lot of boards, especially softer boards in my opinion. They're super comfortable and very light compared to most other bindings I've had. Board feel is the best I've had too.