Can I ask a related question?
I'm playing at home, so trying to keep things relatively quiet, but I'd like to get the best sound possible from the various Spider setting options (I'm all over the map, jazz, rock, blues, country). Am I going to get better sound quality if I turn the volume up on the amp and down on the guitar, or down on the amp and up on my guitar. I've been messing around and amp down/guitar up sometimes seems better, but I'm not sure. And if that's the way to go, how far down on the amp should I turn the volume?
So, simply put: which amp/guitar channel volume and bass/mid-range/treble settings will give me the best sound quality at low volume?
Also, when I do change from one preset channel to another, I often get hum/buzz/static, sometimes with a bit of feedback, which disappears when I fiddle with the channel volume/drive knobs. Is this due to my physical set up -- ie am I sitting too close to the amp with my guitar, or too close to the TV, etc. -- or is this just one of those things that everyone experiences?