I have a theory. Any warbler with the word Black in the name is a good warbler. Black-and-white, Black-throated Blue, Black-throated Green, Black-throated Gray, Blackpoll and last but not least Blackburnian. Hmm, now that I think of it almost all warblers are cool.
I especially love Blackburnians because in North Carolina they breed at pretty high elevation and I usually find mine in beautiful spots like the Bald Knob Ridge Trail near Mt Mitchell which is also the highest mountain East of the Mississippi. That's where I found this bad boy.