Having used PM now for a bunch of real life jobs, I find this is the best SW tool I bought in a long time. (Rawshooter is another that comes to mind, sadly bought by Adobe, but probaly nice for the owners...;-)
There are a few things i miss from the rating/culling tool I used before, Pixort (stil available but not updated in years, and a bit buggy, but probably the best UI ever encountered for rating):
#1 Click and drag on any point in an image zooms to 100% there (in the RAW preview or full file as selected).
#2 Optional autoadvance to the next image after rating with 1-5 keys. This in combination with #1 makes for a great combination. Anyone having used a First Person Shooter game know what I mean. Keep one hand on the mouse and the other hands fingers on the 1-5 keys, and you can be deadly fast, never having to move hands or fingers.
#3 After rating completes, Copy or Move all the rated files to subfolders with selected names. Like 1-Delete, 2-Perhaps etc etc.... In PM you could even have subfolders for color ratings, like "Purple-Technical Best" "Red-Technical Weak", and the even let PM combine them like having folders named Rating + Color: "Perhaps - Technical Best". (I dont trust technology so I always put my images in subfolders with ratings like this. This way I can use any appliaction and not worry about XMP compatibility etc etc, but in PM I have to make each subfolder manually and then select and move the files myself. Work better done by the computer.)
#4 Seeing the list of thumbs at the side of the full preview. This is good for three reasons.
1. You can see that a probably better image is comming up next, or that this one the first in a serias of 5 simillar images.
2. Then you can get to see the current images as a small thumb, and this is really useful as it shows what composition works in a revealing way. In a full screen preview you can easily be fooled by the big display.
3.Then you can also CTRL-click some other images in the shown thumbs list and get in instant and synced scrolling compare of all of them. Without going back to the thumbs view.
So PM gous, have a look at Pixort, it really is a masterpiece in this area, even though probably a dead product now.
Rgds
PM