I am a Kemper rack user (with foot controller).
The lions share of my tones are generic:
- Chimey Fender Clean
- Acoustic type clean
- SRV / Bluesy breakup
- AC/DC Classic Rock Distortion
- Modern Rock Mesa type Distortion
I use performance banks (5 slots in a bank) for different combinations of these sounds that are used in different kinds of songs so I have everything I need for a song without changing banks.
Using the 4 efx assign buttons on the foot controller, I do the following:
- The right most button is ALWAYS a pure boost of ~4db that simply raises the volume output (no more gain)
- The left most button is ALWAYS a pure boost preamplifier to raise gain a specific amount
- The middle two buttons are different things, but mostly I use them to either add an actual distortion pedal, turn on or off a special effect like chorus, or to increase/decrease the reverb a certain amount.
Using this setup, I have a very wide range of tones I can quickly achieve using only 3 or 4 banks of performances.
All of my rigs have reverb (not alot) and some have delay.
I have a handful of special banks with much more elaborate, song specific setups. Two examples would be U2 songs, and "Money For Nothin". I have about 10 of these rigs that are setup specifically for an unusual song sound that I needed to achieve.
Some touring players I know have a performance bank for EVERY song with each bank tweaked specifically for that song. That is just too much for me to try to setup for every gig (must be nice to have someone setup all your gear for you for each gig and song :) ).
This approach gives me the ability to cover most songs with a standard set of rigs that I am very familiar with. All I need to know is the type of sound a song has and I can get something very close (or at least within the realm of "it sounds good in the song") with almost no effort.
Having the "special cases" is for songs that have a signature sound that is unique and would be missed if the guitar didn't have it for the song.
I find that (for me, a non-touring musician), this gives me the right amount of work-per-gig effort. It also lets me sit in with pretty much anyone and sound good doing it.