I have the 830. I would suggest you keep your other machine as a back up. Service time for annual maintenance can and does take up to a couple of weeks at many dealerships. I kept my MC9000 (TOL for its day) as my back up and it will come in handy. Of course, you're justified for getting 2 machines.
I sort of think it was 'meant to be'. Get it, love it and don't look back. My advice.