I really like that green Boost ^ cap in the bottom left corner.
What can I say, I love them all.
As for favorites, I would have to say I agree with you John, and I like the splat keys the best.
In single colors, I really like the ionospheric blue for some reason, which is weird, because I'm not really that into blue.
All the triples look great of course, but the Mr. Friday always catches my eye, I guess 'cuz I don't got one.
And your 420 collection is very impressive, there is a hot pink one in there (i think?) that is my favorite.