I definitely HIGHLY recommend Adywan's Empire Strikes Back theatrical reconstruction.

These are the only differences from the 1980 theatrical version still present (that I remember from watching it):

- Re-composited snowspeeders (not CG, just the original elements better integrated in some instances, from the 1997 SE)
- Han's "vest" shadow "fix" (in the carbon freezing scene, from the 2004 SE)
- Re-composited falling Luke (so he's not transparent; from the 2004 SE I think)
- A couple imperfect lightsaber effects (i.e. the core isn't 100% white in a couple shots, but at least the blade isn't pink like it was in the 2004 SE)

Everything else is the same as the 1980 theatrical version, and it looks even better than the 2004 DVD due to Adywan's masterful color correction. And I'm amazed at how seamlessly he removed the Cloud City SE additions.

For the other two, the best you can do is to get Dark_Jedi's V1 or V2 releases, or wait for his V3. I haven't seen Harmy's "partially despecialized" HD versions, so I don't know how faithful they are to the theatrical cuts.