I picked up Luke tonight.
This one is actually pretty damn good. The X-Wing lends itself well to a Transformer.
The transformation is pretty easy. Not G1 easy, but easier than some of the more recent TFs.
The legs are a little skinny, but it's to be expected since both legs are formed from the nose end of the X-Wing. The feet were a little wonky at first, but I figured them out. (All those years of schoolin' payin' off, mom and dad!)
He also doesn't hold his lightsaber, at all. So I gave him one of Obi-Wan's and he's managed to keep that one in his hand for the last five minutes. It's also a little back heavy since two of the wings are just tucked in back, while the other two wings are on the shoulders.
I like this one a lot better than Obi-Wan, that's for sure. I could see myself buying another to make a Starscream version, since all that would be required is removal of the orange visor on the face and a simple repaint of the helmet and orange areas on the body, maybe to something red, more befitting Starscream. The face is silver, so with a black helmet, that's pretty close to Starscream, IMO.
I'm not sure about buying Vader and Grievous yet. Nodoby else is buying these, so there's no rush there.