Kevin, I am certainly no expert on the subject but what I can tell you is there is a test in the Avia setup disc that specifically tests for this. I used this test for my Yamaha C-920 and I didn't see any delay with that machine. Where the delay becomes apparent is with virtical colors (stripes). What you are looking for is an overlap. The Avia details what to look for.
As for different display, the only reason that would matter is if a specific display has the ability to correct this error internally. Some do but most do not.
You can fix this problem (if you can even notice it in regular viewing) with different length cables. I believe you can find more information at the hometheaterspot. Try the Yamaha forum and search that.