Yeah as you've said, the AG polish aint as harsh....you'll notice this as soon as you use it tbh. But I never got on with the AG one for some reason.
Here's a real good website for anything wheel related....its very VW/euro based but dont let that put you off

I even found some pics of my car on there after a google search led me to the site whilst I was trying to hunt down parts for my E50 rims.
http://www.wheel-whores.com/forum/in...f019ada296b4fa