If I'm just watching the original films, I just watch the official GOUT. My tv is 4:3 anyhow so the non-anamorphic doesn't bug me too much.

If I'm watching the prequels, it's generally going to be Phantom Edit, Attack of the Phantom, and Spence's ROTS edit. I've seen Stankpac's ROTS edit, but I still prefer Spence's. I guess it might have to do with how Stankpac's feels a little TOO trimmed down to me, maybe.

When I am in the mood to watch all 6 together, it's usually the above followed by ANH Revisited, and then I don't know... never actually watched all 6 at once.