I have two racks that I use and they are set up in this order:
Rack 1 - I use this one live...
Rocktron Chameleon 2000
Rane MPE-28
Boss VF-1 (mono in, stereo out)
Rocktron Velocity 250 power amp (set up to stereo)
Rack 2 - I use this at home mostly...
noise modded ADA MP1 (stereo out)
Rane MPE-28 in the ADA's effects loop
Rocktron Intellifex effects unit
Rocktron Velocity 250 power amp (set up to stereo)
I honestly love the flexibility of a rack. You just can't get that with a head. I use an ART X-15 foot controller for both racks (I have 2 of them) and the first rack is configured to use the expression pedals... one for volume, one for wah or turning chorus on/off, depending on the patch. It is great using that to turn the volume off to switch guitars when at a show.
I have two cabinets right now, an older
Marshall 1936 and a Genz Benz G-Flex. When combined together those two cabs are insanely awesome together!!!