What's a great shampoo that will make your hair silky?

I've tried Pantene it worked great, but after a couple weeks my hair started to get greasy and frizzy(my hair is always frizzy though) and all gross looking. I've tried sauve, dove, organix, and herbal essence, and none of those seem to be working. I want to have silky, smooth straight hair but I don't know how to. Help? Also, my hair is frizzy at my scalp and around that area, i'm wondering if there's a an anti frizz or something to fix that? Thankssssss ;D