That’s a current model, isn’t it? If it’s working, why don’t you just get a really good DAC? Goodwins has a DCS Debussy up for $5900 with warranty. Do a little haggling and take it home. I honestly don’t think that you’ll significantly better what you have by purchasing another player in the 5k range, especially if you want SACD capability. I haven't heard the Isis, but it's gotten raves from people who own them. But it is CD only, I believe.