I tried CBBE, proportions were a bit exaggerated for my taste but for a while it seemed like it had the most support so I said eh, no biggie. Couldn't be bothered to mess around with Bodyslide. When UNP gained more traction I switched to that; I liked the shape better and some of the texture options appealed to me more than the ones available with CBBE. Plus I feel- and this may be completely untrue but it's just what I've seen- like there's a greater diversity of armor and clothes available for UNP. Not just more stuff in general, but a greater range from skimpy to non-skimpy. Not every day is a bikini day for me. I'm not messing with my Skyrim install right now but maybe one day I'll get real picky and futz with textures and meshes and skeleton edits to get that *perfect body* myself. Highly unlikely this will ever happen, but i can dream...