Congrats on the new knee, Dubster!
I had my right one replaced in December, 2016. The pain and crunchiness of the old one were gone immediately, and the rehab wasn't bad at all. I rarely even give it a second thought these days. It clicks a little, is a little lumpier than my other knee and still feels a little wooden from the nerves that were cut, but I am extremely glad that I had it done.
Best of luck with yours,