I like Aussie stuff. Doesn't fry my hair, doesn't make it greasy, smells NICE.
I'm pretty lucky - relatively low maintenance hair. It's long, medium brown/mahogany shade and pretty much straight. When I was a toddler, I had curly little ringlets, then it went stick straight and fine for years, now it's getting more body again. If I put it up and pieces fall lose, they'll curl up on their own.
My hairdresser told me to just shampoo at the roots of my hair and let it rinse through the rest of my hair. That way the ends don't get dried out. And then to just put conditioner on the ends and let it sit before rinsing it out, so the roots don't get flat. Sometimes I'll just leave a little conditioner in to fight the frizzies.
But pretty much all I have to do to my hair (besides wash it, LOL)is keep it trimmed nicely (split ends are a B*TCH!) and brush it as I blow dry it. Plus this gel that I use...
I lay down the $$$ for styling products. I get ISO multiplicity disciplining smoothing gel. If any of you have long hair that you want straight and smooth, BU Y THIS STUFF! It's wonderful. And my hair isn't flat either. Or greasy - just feels silky and soft. I love my hair. Having long hair is just so fun and makes me feel cute.

Plus guys like it too.