I used an on/off/on dpdt with 100n in the center for stock, then a 220n on one side and 2.2uf on the other. The 2.3uf selection hasn't been too useful yet, but the 320n (total) side worked well when I used a downtuned guitar.
I also made another with a 9 way rotary starting at 10n for very thin sounds. It was overkill for me as I was happiest with stock.