Writing down the settings is a huge time saver...even when playing through different rooms and different sytems...if you at least get the trim and volume for each person you can save a lot of time. And if you play the same place over and over try geting as much information as possible. I've slowly been writing all the settings for the system where we play...and each week setup is a little bit quicker and the first song sounds a little better. The added advantage is that with the written settings you are better able to persuade others in the band to stop fussing with the sound. Its easier to tell people, the sound is the same as its been the last 4 weeks, I don't think you need to turn up.