So, i have been with my Nikon D40 for 2 years now, and i feel its time to say goodbye. I have been looking at a few different "intermediate" or "semi-pro" cameras and am just so confused on which direction to take. My main concern with my current D40 is lenses. I want a camera with a built in focus motor so i dont have to buy crazy expensive lenses with AF motors in them. I want more features than my D40 has, movie recording, live view would be nice and I definitely need/want to have self-cleaning sensors. I had some pretty stubborn dust stick to my D40 sensor in the past, and its a pain!!! I have been looking at the Nikon D90, Canon 50D, Pentax Kx or K7, Sony models and Panasonic LUMIX (4/3 or micro 4/3) models. Most people i know, in fact, all people I know always stick with Canon or Nikon. Sure, these are great camera brands, but i feel like i should broaden my range and try to take on a less popular brand, because i know Pentax and Panasonic develop great cameras. My budget is from $500-$900, i don't want to go over $1,000. I would love if some of you can come up with a list of a few models i should go and look at in the store. Much appreciated!