I'm not sure I agree that they're the MOST compatible, but they certainly get the job done.
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Suggested by ShattenFlamme
I used to avoid drawing vaporeon, for a long time. Getting the neck frill looking good was a nightmare, a curved hemispher-ish surface, with curves at the edge? Nightmare.
Apparently at some point I got over that, though, and I'm certainly pleased about it. I love vaporeon, best g1 eeveebuddy. maybe second or third best out of them, if you ask me~
Also i tested the waters with using some 3d props. The palm tree and umbrella were plopped in there and i drew over them. Depending on the prop in question (and how much of it you can see in the pic), it'll definitely save some time.