Investing in a SCD777ES with a DAC

I have a mint SCD777ES that was replaced for a
SCD-XA5400ES in my main rig. I have been reading many posts where the SCD777ES is used as transport and hooked to a top tier DAC. Would this be a wise investment considering I already have the next generation sony cd/sacd player?
I do not think Sony makes the transport for the SCD777ES any longer so if it breaks you would be out of luck!
Think Oppo 105, new better technology. Maybe even better sound.