I went the other way round (Lumia 930 -> M8) after I had gone through 3 930s, all affected by various hardware issues.
The M8 is dramatically faster (app load times, fluidity when scrolling, keyboard / typing speed / autocorrection speed), much better built (no squeaking back plate, for instance), has much better speakers, and doesn't lack all the apps (Feedly, dictionaries in the Kindle app, Sonos, Netatmo, dropbox and many, many more), has a dramatically nicer screen without any issues whatsoever, works with my car's (2013 VW Golf Variant) bluetooth system etc. etc. I'm no real fan of Android - it works, it's customisable, but it doesn't wow me and I greatly prefer WP8 but overall, the M8 is the best mobile device on the market and beats the 930 in so many ways, it's not even in the same universe.
So just from my personal experience, I just, for the life of me, can't see how you like the M8 less than the 930.