Have you considered a Laney Ironheart? From the videos I've watched and sound clips I've heard, the metal tones seem excellent. And to your point about needing something for jazz: most reviewers have commented as well that the clean channel is surprisingly great for a metal amp. Seems to be a good bang for the buck, and you can pick them up for a steal used:
http://www.guitarcenter.com/Used/Laney/IRONHEART-IRT120H-Tube-Guitar-Amp-Head-112648007.gc
I believe it also comes in a 60 watt version as well.
https://www.youtube.com/watch?v=pjd3-J_XeoY
https://www.youtube.com/watch?v=cyallkRbBEs
http://www.guitarcenter.com/Used/Laney/IRONHEART-IRT120H-Tube-Guitar-Amp-Head-112648007.gc
I believe it also comes in a 60 watt version as well.
https://www.youtube.com/watch?v=pjd3-J_XeoY
https://www.youtube.com/watch?v=cyallkRbBEs