I'm BACK!!
And now let's take a look at the different 1/6 scale Darth Vaders out there - the usual suspects: from left, Hasbro Ultimate Villain Darth Vader (Episode III), Sideshow ANH Darth Vader (Star Wars Episode IV - his first appearance), Hasbro Electronic Darth Vader from Episode VI and Medicom RAH Episode VI Darth Vader. I've excluded the original Hasbro 12" Darth Vader which was released in August 1996.

Another look at all four of them

Zooming in to Medicom RAH Darth Vader right in front

And here's the drastic height difference between Sideshow Darth Vader and Medicom RAH Darth Vader. I don't know how some collectors can say they don't mind the height difference as long as the product is good. Medicom RAH Darth Vader is very well produced, for sure BUT the height difference is really disturbing for me. Most of my figures are in 1/6 scale and I cannot place Medicom RAH Darth Vader near any of the other 1/6 Star Wars figures because he looks puny next to them, instead of being imposing. Even when lined up with the other Medicom RAH Star Wars figures, he's still puny!!

Sideshow Darth to Medicom Vader: "Whatcha lookin at, boy? You aching for a beating, short stuff!"

Medicom Vader: "When I grow up, I'm gonna be big and tall and strong like you."

And here's Sideshow Darth Vader standing side by side with Hasbro Darth Vader - a case of SLIM vs FAT

So for me, even if Sideshow Darth Vader is considered by some to be a little too tall, I say better to be TALL than small and short.
Full reviews of the various Darth Vader figures can be seen at the following posts:
Sideshow Star Wars Darth Vader Review
Part I and
Part IIAnakin Skywalker, Ultimate Villain - Hasbro
Episode III Darth Vader with unmasked pictures
Medicom
RAH Darth Vader
Next post: Sideshow Darth Vader with Sideshow Storm Troopers (will the height difference be really that telling?)