Well I am upgrading my bass amp combo and I have given myself a few options. I have an older Crate BX25, 25 watt practice amp. I will be upgrading to 200ish watts so i can play with my friends a little more. I am only willing to spend at max 350USD. 1. The music store I bought the amp from in 1999 says they will give me the 160USD I paid for it then on trade for a better amp there. so I can get one worth 510USD. 2. I can Keep the amp and use it for my microphone, or as a nice small practice amp. And purchase an amp on ebay for 350 and have 2 amps. My amp is probably only worth about 80 (acording to Long and Mcquade)bucks so I am thinking I should trade it in and if I want to pick up a small amp again i can. However this is quite a nice 25 watt amp with a 12 inch speaker. so I kinda want to keep it and you can get really good deals on ebay. Any suggestions?