Tubes are a whole other thing. But as far as a good quality solid state preamp, Bryston is'nt a bad choice. Particularly if you get a used one.
I went looking for a relatively affordable self contained solid state (no outboard supply), single ended only preamp with tape monitor. A tougher call then you might think, especially if you are talking currently available new gear. Anyway a used Bryston fit the bill.
It does'nt add any sweetness the way tubes might, but neither is it harsh. Maybe a bit forward and plenty of gain. Neutral yet still musical. It makes a good match for power amps whose gain is on the lower side, I could see it being a mismatch for higher gain power amps. There are definitely better preamps. But the BP6 does the job fairly well.