I suggest you consider how much power you really need. I used to run a high power SS amp that was excellent.
Now I find that 1.5 watts sounds much better than I thought anything could. Of courses, synergy, listening preferences and the partnering equipment you already own will shape your search.
I have a friend who runs the 509 lux. IT is superb. Most of the time he doesn't even use full one watt of its capability. I mention this because at normal listening levels a low powered single ended triode is hard to beat.