The older Sony's like the xa7es are very nice sounding but still retain transparency and resolution. They are actually pretty remarkable that they get such nice fleshed out sound without losing other audiophile qualities.
If you really want something warm and don't care that much about the rest, find you an old Rega Planet CD player.
There others but these two are my favorites, the Sony because it's damn good and the Rega because it is ultra warm.
As for the Meridian's, the 508-20 is warmer than the 508-24 for less money.