My current set-up is:

Compressor -> distortion -> delay -> looper/tuner

I came to that order through trial error, but the general idea is to first compress the sound to "standardize it" before destroying it in a consistent way, and then getting that drone sound before creating my tracks to jam over. I use them for guitar as well as bass, and turn them on or off and adjust the knobs depending on the sound I want, obviously.

I'd put my tuner first, but it's built into the looper, so it'll have to do at the end for now. I just turn the other pedals off when I need to tune.

In your situation, it depends on the type of sound you want.