I voted MXR Phase 90, why just one, and other. Nice poll setup OP!
If just one I would go with the flanger. The Boss BF-3 also has a "chopper" mode that gives a hard tremolo, and plenty of jet "woooosh" with the flanger if you want it, cut back on regen and it mimics a wet chorus pretty well.
But I also run an original reissue script Phase 90, which kills in spite of a small volume drop. Just sounds great.
For chorus I really dig the Iron Ether Polytope. I defeat the modulation and just add detuned voices. I will say I also really like the MXR Analog Chorus, just $99 and cops the 80's vibe really well. Not too wet, not too metallic, a bit on the subtle side, but good. I far preferred it to the MXR Bass Chorus pedal, although in fairness that was just trying them in the music store, not with a band. But the more extreme sound of the Polytope is really cool.
If just one I would go with the flanger. The Boss BF-3 also has a "chopper" mode that gives a hard tremolo, and plenty of jet "woooosh" with the flanger if you want it, cut back on regen and it mimics a wet chorus pretty well.
But I also run an original reissue script Phase 90, which kills in spite of a small volume drop. Just sounds great.
For chorus I really dig the Iron Ether Polytope. I defeat the modulation and just add detuned voices. I will say I also really like the MXR Analog Chorus, just $99 and cops the 80's vibe really well. Not too wet, not too metallic, a bit on the subtle side, but good. I far preferred it to the MXR Bass Chorus pedal, although in fairness that was just trying them in the music store, not with a band. But the more extreme sound of the Polytope is really cool.