Toggle. I prefer the sound of the simple 3 way and a coil split push pull pot. I'm a traditionalist in that regard. I come from playing LPs and Teles most of my life pre-PRS so it's just what I'm used to (3 way switch).
I also noticed when I took the rotary out it was like a blanket coming off the amp, everything was clearer and restoring some high end. And I've used blades before on Strats but they just don't do much for me. I'd rather have a push pull for those "other sounds". I'll live with the volume drop (that's why they make boost pedals!).
That said, between rotary and blade, I'd go blade. The rotary was not cool for live fast pickup changes (which I do a lot of, actually).