What do my fellow viners think?

I've really always disliked all of her designs but if I had to pick I'd pick my poison I guess I'd go with her original design

As someone who actually likes Diamondback, I like all of her designs. She went with her natural brown hair color mostly when she was dating Captain America, since Cap is a traditional sort of guy. The problem is that it's a rather bland look for a comic book heroine. Magenta or pink hair is much more distinctive and recognizable. Pink goes best with her current costume, but I think I like her magenta hair color best.  
 

I actually enjoy her current look quite much.

Current Look.
It's stylish and unique.  I mean, how many characters even use pink in their attire now a days?  It's a nice eye catching color that breaks free from the mundane Black/Blue/Reds that are PERPETUALLY used in the comic book medium.

@Baddamdog: I agree with you! She just looks better with brown hair to me for some reason.

The top one.

The costumes are all basic changes on the same theme. I like her with the magenta hair the best and the pink is fine too. She only wore the brown to make Cap happy. I don't like the brown outfit she has worn lately.