Hot, humid and drizzling, but I went ahead and taped off my trunk into 3 sections:
1. hand polish
2. no polish
3. PC polish
No polish:
Comment: Nasty.
Polish by hand, foam pad, 3 applications, 10 minutes:
Comment: Not bad. Definitely improved
Polish by PC, 2 polish applications, 10 passes, 5 minutes
Comment: Wow. I didn't realize how much improvement I've been doing on customers' cars until I started doing these side-by-side comparisons.
As you can see, the optical clarity is quite dramatic when using a PC.
I'll be taking and posting swirl pics of the 3 sections tomorrow if the sun is out. 
