It really depends on your hair type and what kind of results you're looking for. I'm personally not a fan of Aveda S&C because it irritates my scalp. Even though it's more natural, it has a lot of irritants in it. I love their styling products though.
Since I color my hair I avoid sulfates, it's my personal preference. I don't like how they strip my color, sulfates are very harsh. I personally LOVE the Kenra Platinum line. They have formulas for thin, normal and thick hair. The thick hair reconstructor (conditioner) has shea butter and makes my hair feel fabulous.
I've also been trying out the Sexy Hair Chocolate Soy Milk shampoo and Soy Milk Conditioner. It's sulfate free but a bit sticky to apply. It smells wonderful and also makes my hair feel good but not as great as Kenra.
If you're looking for a great deep conditioner, try the Olive Oil masque from Regis. It's wonderful!!! I've read good things about the Olive Oil S&C as well but haven't tried them personally.
I'm somewhat of a hair product fanatic so I apologize for the book-long post.