I like the body profile of the sprite on the right (more balanced and less hyper), though the head design for the sprite on the left is cuter. Also always good to get new content for him; astronomically high cuteness levels.
From an overall standpoint, I like the one on the right mainly because the hips do not seem overly large relative to the upper body and shoulder width.
As for the private bits, it is up to personal preference of the user whether they like hyper bits or not.I personally like having fewer hyper elements.