Same opinion here. There are *very* few instances where a PC *using today's products and the right technique* can't do the job. There *are* a few instances where the heat/etc. of a rotary is simply required, but those are few and far between and you *might* be able to handle those situations differently anyhow; I've never found ~2K sanding scratches to be all *that* big a deal, even on the Audis and any flaws worse than that you could just wetsand first.
I too have a Metabo, and a Makita, but I expect they're gonna spend more and more time unused on the shelf.
PC/3.5" PFW pad/M105 oughta handle anything that's safe to do, even on the hardest clear. M105 works pretty well on Audis *by hand* for that matter. Even before M105 came out the PC could do some really impressive work with the little pads and the right products.