best and worst

Hi everyone, I just recently finished dog grooming school and I already got a job! It's good to have backup equipment in case something breaks, so what are the best brands, items, etc. for professional groomers? At the moment I'm mainly focusing on cordless clippers. Right now I have Andis...

Which are the top five best breeds and then the top five worst breeds for first time owners in your opinion? And why? :) I know there is no definitive truth to this, as it all depends on the person, etc. But thought it'd be an interesting discussion!