Mmh, difficult for me to say...!
Painting skills are obviously the same, so that's not a criterium.
In the first variant I found a partner missing, but the anatomy was perfect (except for the hair maybe

).
In the second, the guy is not looking for someone who is not there but just for the right direction to take after leaving the tank, and I like the head a lot better....but there is something with his arm that does not fit 100%...!
So in the end, I'd say I like them both for their sheer superior quality!!
Let me add that I find it admirable that you modified the dio in the first place!!
Thank you for letting us participate in this superb work!!
Cheers
Romain