My main rig is a 10 space SKB. Now, before folks say that is too large ( I could condense it to a smaller rack), I bought it with the intention of having a switching rig.
I my rack currently is a power conditioner, a Trace Elliot GP12X, a Korg DTR-1 tuner, a BBE, and a Crown Powerbase 2. I have a Rocktron Patchmate new in the box. I also used to have a TC Electronic rack multieffects unit.
My intent was to get some type of tube preamp to A/B with the Trace, be able to drop my BBE and other effects in and out of loops, and do it all from a programmable MIDI controller.
Some may say overkill, and I might agree to an extent. I like the ability to cover a lot of different sounds on the fly, and eventually I hope to finish this rig. Life has overtaken the finances though, but I am on the lookout for a nice, warm, tubey preamp. A nice Alembic or maybe a Demeter comes to mind.