Heh heh, I *still* haven't started on my E36 so I still don't know what's gonna work...but the 05933 really is about as aggressive as I'd go by PC. That Meg's #4 is a *rotary only* product, the PC won't break it down the way it's supposed to be broken down- *NO WAY* would I try that by PC on anything you care about, seriously.
Using a 4" pad setup on the PC will make it *much* more effective/aggressive. The only way *I* can do real correction by PC is with the 4" pads.
There a few products like the Hi-Temp stuff, but IMO the combo of 05933/4" pad is about as aggressive as the PC can get.
You might look
HERE if you can't find it locally. It really is *that* good, even if it's still mild for this job I'd hate to not have some on hand. I'd get some 05937 too. I'm a broken record, but *man* do I like those two products!
Hope you had fun on the track! I finally got my M back from the shop, it's *so* weird driving one with an automatic

I keep going to shift and, uhm, oh yeah...no clutch pedal.
I do plan to start on mine later this week. I won't be going for absolute perfection, just "a lot better" so IMO whatever I end up doing will be a pretty sensible approach for normal people who're actually gonna drive in the real world. I'm *very* conscious of the fact that mine has been "polished out" before and I sure don't want to take off too much of the little clear that's left. We'll see what I end up having to use- I'm planning on using the 05933 for most of the work.