Some people keep their old amp when they buy a new one, while others trade. I've noticed that quite a few people on this forum have a nice collection of amps. To the collectors out there, I have a few questions: 1. How many amps do you currently own...how many have you previously owned? 2. For the style of music you play, can one amp do it all? Or do you need a few different ones to mix and match? 3. How much do you spend on amps compared to the rest of your gear?