Car Rentals- Where do you go to rent a car?

Ok, I've been driving myself crazy looking for a website that I thought I had bookmarked.. It might be on my desktop, but since that's out of commission for while, it's no use to me right now! It was a great comparison site that you could mess with all of the options to find the best deal, best car, etc.

Anyway, now I'm looking for your help!

I need to know, when you go on vacation, where do you rent your car from? Do you use a comparison website or just site hop for the best deal? Do you use coupon codes? Any links (or great deals) you can send my way would be greatly appreciated!

Thank you, readers!