1) I was on a quest for "The Tone" ever since I started playing, untill I realized that it doesn't really matter that much. What IS important is having a tone that works within the context you're working in, and in most situations I'm able to achieve that.
2) Whatever I can get my hands on. For versatility, I like the amp modelers these days.
3) Not really. As long as it works with the rest of the music, I'm satisfied.