Recommended CD player below 1.5K

I have intention to upgrade CD player in near future, current CD player is Cambridge Audio 540C V2. Is Rega Appolo a good replacement? I am looking for CD player below 1.5K to match my current hifi rig (see system). Please give your recommendation and review if possible.

Is it make a lot of sound difference between unbalanced (RCA) interconnect and balanced (XLR) interconnect?

TIA