I'll just chime in with EHX products before Boo gets a chance to...
I've tried two phase 90's on bass: current Dunlop as well as a vintage MXR BUD Box script logo. I really liked how the script logo sounded (but it wasn't TBP, and you had to use a battery), but it wasn't really lush. The four-stage phasing is kind of hard to work around as well. The Dunlop reissue definitely doesn't hold a cnadle to the original. My personal favorite is the EHX Small Stone (Nano). It's the same size as a phase 90, but has a much lusher phase sound. Not as "wet" or "slurpy/glorpy/drippy" as some of the other boutique phasers out there, but it's definitely a great sound!
Also, you might wanna do a search on the EHX Stereo Electric Mistress (Chorus & Flanger pedal in one box).