As far as this vs. Harmy, I prefer the Team Blu edition. Part of what's specific about the 1997 edition is the color grading. That's preserved in this version. Harmy's is interesting, as it is a tweaked grading of his DeSp, making it like a 1977 inspired 1997 version.
There's merit to both of them, but I would generally rather watch the purer version in the already very rare occasion that I watch a 1997 SW film. I think this will be the go-to until some lunatic cleans up a 35mm copy. :P