I got a bunch of Kano's Flight Dunny's this week and plan on making a custom Mutations set of 3 other of the Seekers and right now my top contenders, based mostly on their colors and contrast, are
Sunstorm, Updraft and Acid Storm.
A few others that I also like are:
I yanked these images off photo bucket so I did not draw these but this guy did a ton of them.
If you're interested in these guys and have an opinion...email, tweet or message me and maybe they could be yours.