I enjoy reformers pilates a lot, but that's because of the deep stretching worked into the routine. It's a game changer. If I could, I'd be doing it every day.
I fucking hate cardio with the passion of 190 million burning suns. However, I have experienced a runners high before. You get a bit lightheaded and dizzy, but not so much that you pass out. It just feels good. However, not good enough to get me up off my ass and do it, lol.