the crybaby is a cheaply-made copy of the vox now. but back in the 60's when they were tip-top, they were still only just the same as the vox.
i'd reccomend the crybaby if you want to get it quickly (lower cost) and want the 9v socket... and if you want a pedal that'll break in a couple years.
the vox is a sturdier version. better quality parts (so it isn't all held together by the jacks) and it sounds fuller to my ears. mine lasted 10 years with no trouble.
when my vox crapped out, it was cheaper to buy a used crybaby and steal the pot from it than it would have been to buy a new dunlop hotpot! so i took this picture for prosperity. as you can see, the crybaby is visibly hooptier:
TOP: vox
BOTTOM: crybaby

"i swear the morley is not mine" sounds like something i said, well, agreed with Bandit: Morley's aren't really wahs. i'm not sure what it is they are exactly, besides sucky, but i'll leave it up to steve vai and the guy from creed to figure out. everything i like to do with a wah is impossible on it (including the usual foot-sweeping 'wahwah' stuff, it don't sound right... but i'm mainly talking about the half-####ed nasal, phasey midrangey boost you get from leaving a wah half-on in the right sweet spot).