Sogood1,
I do realize he did say bang-for-the-buck, but the original poster asked for "best transport regardless of price". And I did compare the Pioneer 563A against some other budget players (eg. Toshiba 3950, Panasonic RP56) and didn't find the Pioneer to be particularly better or worse as a transport compared to these others.
And yeah, the Empirical mods are expensive (with all the available mods for the S7700, it was about $1300). Still, I have yet to find anything that clearly beats it in any price category.
With the budget players, I'd strongly recommend making sure that you use a true 75ohm digital cable, and that the length be between 1.5m-2m....