I've been doing a LOT of research the past few days about these three. I have been wanting to upgrade from my film camera to a digital one for a while now. Pretty much, I'm starting to lean towards the Pentax k-x because it has some GREAT features for a STEAL of a price. I love the low light ability of the Pentax at 12800iso, 12.4 megapixels is excellent. But mostly, I love the price. I have very limited budget right not and I'd love to get the most for my money before I can buy a professional camera. I also love what I've heard about it's dust reduction, and weather proof exterior. I'm experienced with Photoshop also, & I'll be shooting mostly in RAW. But then again, Canon and Nikon are extremely reputable cameras and I love them also, so I'm stumped. I may want to take photography classes in the future in Fine Art.. and I don't know, most people prefer Canons and Nikons. BTW: I am planning to be taking lots of landscape and portrait. I'm an ex model and am also intrigued with fashion photography. Hope this helps! Just want to hear some experiences and opinions! Thanks!