What's a good sub/amp set up?

I'm looking to put a nice sub box with subs in the truck of my car along with some new speakers and throw in an amp or 2. What set up should I get, what brand, etc. I want something LOUD but still sounds good. Price doesn't matter what ever you got. Leave a link if you can otherwise just put the brand and all that. Giving 10 points to the ones I like the most.