I had a Traynor 1x15 combo, with a valve amp. Sweet tone, plenty of warm bottom end, but without sounding muffled. Only 60w though, so the volume wasn't quite there for most gigs. But this was always the yardstick by which all my later amps were judged, until...
One of my amps at the mo, is a PJB M-500. It's a tone monster, that classic rock bass tone is all there. IMO it does the Ampeg thing better than Ampegs, and it's SS.