I would also look for a model that does not run the signal and/or rectifier tubes hard as even well reviewed current production tubes are not inexpensive (plus the hassle of purchasing/replacing them).
If you want to roll tubes, for different sonics, avoid anything limited to using the 6H30 (super tube).
DeKay
If you want to roll tubes, for different sonics, avoid anything limited to using the 6H30 (super tube).
DeKay