Hi, Thinking about selling my 9200, I fixed it and retubed it with sovtek powertubes. It is perfect and that is on one side why I don't want to sell it. But it's to Damm load. Use a el84 and that is enough for me. Will it be an investment to keep? Will it be more worth in 10 years? How is the market now and in 10 years? Hard to tell ofcause but who has some thought about demand in the future?