My favorite style is to use clusters of photos...because I usually try to get every photo from an event on one page!
I'm not sure what you call this style - mixed-media? I love using lots of papers and paint for my backgrounds.
I think I am a "semi-clean" scrapper. I really like the look of all the clean pages, but I tend to add just a little bit more. I also have become hooked on Traveler's Notebook pages that I will later print and bind into a mini Christmas album. I tend to only scrap up to 3 photos, I normally scrap 8.5 x 11, too many more photos and you miss the details in smaller photos.
I like bright colors and art journaling but usually just let the kits evolve into something that pleases me.
I tend to be a bit more of a "simple" style scrapper, with just one or 2 photos on most of my pages, along with some pretty paper layers. I try to make my pages look like paper layouts, and I love to warp shadows to add dimension.