More expensive, for a start. It is unlikely to sound any better, and won't if you're planning on using the digital outs. While there is potential for a different sound depending on the DAC, with CDs being as mature as they are, it is unlikely you will hear any difference.

If you get a CDP with a tube output, all bets are off. But I think those tend to be a bit out of your budget.

Note, there will be people who disagree with me.

I am the Doctor, and THIS... is my SPOON!