When I see a Martin Comm, Buescher 400, King Super 20, Selmer MkVII, Yamaha 61 and Keilwerth SX 90 R I use to take a closer look. And it's just tenors. I have played and owned most models and brands but no Keilwerth SX 90 R. And here is one for sale right now. With nickel keys and sterling silver neck. Seems to be a nice sax. Maybe it will end up like it use to do: I keep my Martins. But I'm tempted.