I thought I saw a post recently where someone asked for opinions about the PMDG 747. At the time, I didn't own one so I didn't reply.
Got it this morning and have been flying ever since, so I figured I'd post this.
First, the plane is rather pleasant to fly by hand...if you remember how much weight and mass you've got...and don't try to break the laws of physics. I flew it from KLAX to KPHX by hand since I knew the route, the heading and landmarks. It takes off just like the real ones. The engines have that same growl. When I landed, I came in slightly low, but shallow. Guess I didn't want to drop all that weight onto a runway too abruptly. Not a perfect landing since I used more runway than I should have, but hey, for a first try...not bad.
Taxiing the plane goes well. Just remember how much plane you're moving.
If you are used to the PMDG 737NG or the Level-D 767, navigation won't be difficult. If not, read the manuals. For my part, I wish the manuals were in HTML format, rather than in Adobe Acrobat (PDF) because then I could more easily bookmark things I used frequently.
Last but not least, it has the best V/C I've seen and it is frame-rate friendly.
Chief Captain
Captain