O'Dell puts it into perspective. I love the different looks I get from both programs and different artists prefer different styles. I have bee using Illustrator heavily latley because (my day job) I am working on a large project (started in late Sept and ends next week) I have been cramming to get 150 illustrations completed for a Chemistry book layout (day job). Illustrator give me a lot of flexibility without having a plethora of layers that I use in Photoshop.
Join the Motorburg forum and there are a lot of helpful artists that will give you great input. I love it there!
See you there!
Here's something I am currently working on...Adobe Illustrator: