I'm glad you like E2 so much. I'm sure you'll use it with even bigger pleasure!
Nikon HGL 8x32 I sold it, with pricks of conscience, but diserved for the cause of my trusty E2
. Then I bought a Nikon Monarch HG 8x30 which is now my workhorse bino, much closer optically to E2 than HGL. A bino jewel too! In the same 30mm/35mm category I also have a Nikon E 7x35, another spectacular porro. So in the "32mm" category I have three Nikons.
These are my observations: E2 8x30 is better at CA and edge clarity than Habicht 8x30. It is true that these two (CA and edge clarity) are quite difficult to estimate in percentages without a very accurate measurement, being a degree of subjectivism and disputes.
1 A pair of binoculars, like Habicht 8x30, which has only 7.8 degrees FOV if it still has clarity on the edges that starts to degrade about 30% of FOV, this is a disappointment. Nikon E2 has about the same 30% FOV as blurred as Habicht but has 8.8 degrees, resulting much wider sweet spot.
Also the blur on the edges goes more unnoticed due to the larger field of view, even if it is present there. But when you have a smaller field of view you notice all the FOV at a glance and then the correction on the edges is more important, it becomes more crucial!
2 On sunny days if I look for the chromatic aberrations (CA) in E2 only with some effort I was able to see them only on the edges, in Habicht I noticed them a little faster (without proposing).
3 In conlusion the differences of adge clarity and CA are not colossal, being two binoculars more similar than different in these two aspects, but for me these nuances matter!