I hate most effects processors (and I when I say "hate," I mean I &%$^$*!@ loath them), but I have a rack anyway. It consists of a Gemini power conditioner with lights (so I can see mah stuff on a dark stage), an Azden wireless, and my Sunn 1200s.

Someday soon I want to add in a good rackmount tuner, and maybe a Sansamp for direct recording or going to the PA and some kind of utility drawer.

I like having my stuff all in one unit I can heft up ontop of my cabinet, plug into the wall, plug in my amp's footswitch, plug in my speaker(s), then plug my bass into. It makes things a lot simpler since everything is set up right from the get-go and I only have to turn one thing on and I'm ready to go.