Best Buy was a big joke. I left there, a 30 mile drive from my home, and went another 25 miles further to an actual camera store. There I was able to hold everything but the Pentax.
I ended up with the Canon because I liked how it felt in my hands. I really wanted to fall in love with the Nikon but I just liked the Canon better. I also found out my Uncle uses one and will lend me lenses when I want to use a special lens for something. Who can refuse the use of free lenses?
This is why I always recommend people go and pick up the cameras they are looking into...even ones that they aren't and use them a bit.
I had my heart set on either an XSi, a D90, or a 50D a year ago. I went to the store and picked up the XSi, D90 and 50D and even the Sony(don't know which model) to see which I liked using the best. To my surprise the added size of the 50D(even though I have small hands) fit like a glove. I knew that was the camera for me.