Looking forward to your results. I`m still in the hunt for a good swirl remover/compound to use on hard German Paint. I love the Blackfire Products, but the 32oz bottles are a no-go for me as a bottle that size would probably last a lifetime at the rate I go through product.
I just noticed AG has the medium polish, which isn`t sold here. Odd.
Have you tried the Scholl`s line? The S3 Gold works great on swirled out black Mercedes and Porsche paint. The S20 does a little correcting, but is best as a finishing polish. I have used it with the Scholl Spider pad (blue is the cutting pad, I think) and some orange cutting pads, as well as on Meg MF cutting pads. I used the S3 on the black MB with a MF pad, and got by without a finishing polish.
Corey is my local detailing supplier, and he carries that line.