Last CD player?

Earlier this year, I bought a Bryston 4BSST2 power amp and a Bryston BP26 pre amp.  Recently I purchased a pair of PMC fact 12 speakers.  Both produced a marked increase in sound quality.

My source at the moment is a Meridian 588 cd player, which is about 12 years old.  The transport was repaired about 2 years ago, and some capacitors replaced.  I play only redbook cds, but I may look into downloading hi-rez files later.

I am wondering if buying a new cd player would produce another big improvement in sound quality.  My budget is between £5,000 and £10,000.  I have read glowing reviews of the Moon 650D and the Esoteric K05x and K03x.  The latter is rather at the extreme end of my budget, and I am curious if it is hugely better than the K05x.

I am trying to build a see-me-out system, so durability is important.  The gear I bought earlier has a 20-year warranty, which inspires confidence.  Esoteric products have a warranty of just 1 year.

I would be grateful for any opinions or suggestions.

Thanks,
Paleo12