I used pantene for a while, and it was like oh my god for my hair. then it turned to crap.
I've had it explained by multiple stylists and random people with long hair - it leaves a lot of wax in your hair, which is why it looks so great at first. But the buildup prevents natural oils from getting to your hair, and causes other problems from use at length. Very controversial products. I'll surely never use it again.
I've been using stuff from Visible Changes for years (preview, take 1, take 2, and a few other things i've experimented with lately) with a few breaks to try other products - that again, were good to start with, but my hair needed to return to the quality products after a couple of months.
Everybody loves my hair and always tells me how soft it is, so I'm doing something right.