The Energon Pub

I haven't been keeping up with them all, and it would be much appreciated if someone could tell me what I should buy for the third movie? I want a set of all three movies. I want everything on blu ray, I would rather not even have a DVD and especially not a digital copy. I don't wanna miss any bonus features or anything like that, and a cool box is a plus. I would also love to have ROTF's IMAX edition, although idk if that even exists in a blu-ray trilogy set. I live in the U.S., so no foreign exclusives....

Anyone wanna tell me the best deal for something like this?