Definitely #4 of this new batch, except I'd want to see it with the darker green-ish colour scheme of 2-3. And I'm not a fan of the red lettering for the title, so sticking with white/blue would be my pick. Of any of the rest, #3 from the original batch (with the sigil/crest dealie) is probably a runner up. Overall looking great though!
Cover #1, though again I think I personally would prefer blue over red lettering for the title. Red just gets lost to the eye, I find. Also, I'd want to save the beetle for the inside cover/title page area. Just a striking clean line/ink drawing style beetle on the page by itself, leading into the whole book. But that's just my overzealous tweaking - #1 is still the winner overall.