Seeing the two MPs side by side it is so clear how much more this is a cartoon Bumblebee.
The original MP looks simply lifeless with a squat head next to the new one.
That said, I really like the real life accuracy and balance that the Hasui era MPs were going for so personally don't have an urge to get the new one unless it ends up being significantly cheaper.
If you didn't have either, I'd say go the new one, but my original is fine with me for the moment.