I had Doepfer Dark Energy mk1 and sold it (BIIIIG mistake). Plenty of mojo, especially in PWM department. Best PWM I've ever heard. I want to get that thing back!
Yamaha SY1 also has some serious mojo. A funky machine
Recently I played Arturia Minibrute. Definitely lots of mojo there.
I own a couple DE's. I like them a lot, but I'd hardly say mojo comes to mind. This may be because as much as I like them, I have several other synths that have much better filters and more intuitive envelopes.
My Taurus III, even though it's a pain in the a*s (pain in the neck actually) to program is just more of big wooly gooey monster. The Dark Energy is kind of my utility synth. It get's patched into other synths when I want a LFO-ed 2nd osc or something of that nature. Yeah the PWM is great, but it is hardly the best PWM I have on hand. My SH09 kind of goes deeeep on it's PWM.
Someone mentioned the MG1? That is kind of my definition of mojo. I've played a lot of other Moogs, but that little synth is so bratty and just plain 70's/80's sounding! The polyphony section gets a lot of hate. But it actually can make for some nifty sounds. Think phaser effect and a low mono osc for an early Kraftwerk tone. Or just a touch of filter and LFO and its kinda funky.
It also has a more nasal/shrill tone than most other Moogs. Kind of more Devo and less Prog? Aside from the mushy action it is one of my favorites.
I wish mine would come back from the dead!
(my avatar is an MG1 btw)