By far...this is the Megatron I have ever seen in statue form. However, I have seen some express small concerns with the portrait of Megs and think he is a little too domey? if that makes sense. I agree if wanting him to be exactly like G1...but I also realize these are G1 inspired and not supposed to be G1 accurate.
So in that regard...the head is fine if they don't change it. I like IA TF line as a whole...but my problem mainly revolves around an inconsistent look and feel to their line. XM designs are fresh, consistent, and provide lots of great extras.
Add to that the paints according to XM are not finished. This is definitely impressive piece.