Entry level tube amps?

I'm thinking about experimenting with tube amps. The goal is simple. I would like my system to sound more reed in the sax and resin in the bow of cello. For the time being I would like the cost to be under $2000, preferably under $1000. If I like what I hear I might go full out with tube amps. If I don't feel there is enough improvement then I'll just stay with solid state design. So this is an important moment for me.