Nightwing for me. Not just because I'm a DC fan! I like the contrast of the colors. It's striking to me. The white one is a bit to monocolor to me.
I finally sold my Tunguska! My customer is a completionist though, so I'm adding the last missing units slowly on commission. Here are the Switchers, for example. Not a fan of the sculpts, but I guess it had to be done...
