Great suggestions so far. A couple lighter weight options that I really like: -EBS Classic T90: Hard to find any more, but a really awesome amp. Don't plan to ever sell mine. -Traynor YBA200-2: Out of your desired wattage range, but breaks up early with a really great grindy tube tone, which it seems you might be looking for. I have since sold both, but I liked the YBA200 better than the YBA300 for tone.