i've used the Neutrogena for quite some time, and like it a lot. I should tell you there was a while when it seemed BP was ineffective on my skin. i stopped using it for about a month, and went back to it, and it started working for me again.
i've been using the Alpha Hydrox for 4 days now, and so far, so good. Not too irritating (just a mild tingle from the 10% glycolic acid), and i don't think it's breaking me out at all. And only $10!