Well since I started this thread, I will answer it.
Spectracomp!
I do still highly rate the Cali CB, but the TC is smaller, cheaper, easier to operate, and sounds more 'exciting'. Notes seem to jump out more and the multi-band nature of it ensures more evenness across the fretboard or when playing aggressively. It sounds a lot better than the RMI Basswitch multi-band to me as well. I understand what all the compressor controls do, yet don't find the single knob an issue. I just set the knob between 8 and 10 o'clock depending on which bass I'm using and I end up with a great sound. I will have to dig into the settings to come up with my own preset though since the stock one has a bit of a gain boost.
TC downsides - you can't turn it on and off mid song as it makes a funny sound when you engage it. Not just your typical true bypass pop, but it's like either the digital circuitry is booting up or a capacitor is charging or something as there is a slight chirp sound and fade in when it comes on. Also, some presets sound digital - I can't remember which one I was using, but I noticed the tone sounded a bit like it had gone through lossy MP3 compression or through a mild bit crusher. Something you might not notice through a bass rig or if adding overdrive, but a PJB Bighead and Beyer cans reveal all! I switched back to the stock preset and the effect was gone. I will listen it for it again next time I whip through the tone prints!