I used my regular size (11) with the 1st Enigma, it was snug and I could bearly put orthotics. This time I took a half size higher and it feels much better. When I compare my Enigma 2 size 11.5 to my NB 1080 size 11, the NB is still longer at 0.5cm or so! I don't understand why Mizuno size their shoes this way, I guess in Japan and China people have small feet in general, so it's not worthwhile offering high sizes.

The upper is better than in the 1st Enigma, less tight. The shoe is more flexible either. I am going to buy Nimbus 14 in the near future, so I may add an update which one feels better to me.
Anyway the Enigma 2 is a better value for money than my old NB 1080, that's for sure. Just beware sizing, if you're new to Mizuno.

Additional thoughts:
The Enigma shoe is Mizuno's answer to lightweight runners who want a premium neutral shoe, but can't bear the stiffness of the Creation\Prophecy. I think, Instead launcing so many color styles for the Creation (???), Mizuno should launch a 2nd version for the Creation\Prophecy, with softer plastic struts. This way lightweight runners like me could have enjoy these models too. In general, the Wave technology is nice in theory, but why its implementation must be with such stiff plastic? I think the NEXT STEP for Mizuno is finding better\more flexible material for the plastic struts of the Creation\Prophecy. They use the same meterial for ages.

Update: after 6 weeks they just doesn't feel great, I can't really explain (although the heel protection is the best I've found yet in a shoe). I'm currently looking for other brand.
already tried: Glycerin 10 \ Nimbus 14 which both are too soft - therefore not great for long training runs. Vomero 7 - no heel protection, & overall feels cheap.
The prefect shoe, by my terms, would be a stiffer Nimbus 14. The sad thing is, that each company doesn't try to learn from its competitiors and just stick to their old comfort zone.