Beware the point of diminishing returns!!
It is within every product we can buy... sources, amps, speakers, etc.
As valued and impressive as speakers are, in fact the most noticeable and significant step up an addition to a system as anything one can add to a rig, they don't improve the signal itself... they simply reproduce what they are fed... the better the purity and quality of that signal the better the speakers will respond.
Fact. Plain and simple.
If a 'one box' solution for a source must be had the present extent of digital sonics progress has lowered the expense to get some pretty good sounds at non wallet or heart breaking levels.
From what' I've heard lately, less than $2K will do most people very well. Step up another grand, and things improve, though not proportionately. Add still a couple more dimes to the project and another level is achieved... and again... not on a porportional level to the added expense.
And each differign CDP offers a different take on the presentation... who's to say what different is indeed better?
Whoever is paying the tab.
If a person really wants to gain some significant ground sonically speaking, gain more ease of use, flexibility and variety, they merely have to investigate the world of hard disc drive storage and playback approaches now available.
Spending the heft of the 'source' budget on the DAC, and again, more (to a point) is better here, one can readily equal or surpass one box solutions in the $4K to $6K retail price range at less than half their costs.
Sony, BAT, MF tri Vista, Wadia, etc.... and none of those units store 500+ CDs, yet are either equaled or surpassed by my desktop, sound card, IC, pc, and DAC, which altogether ran me right at $2K.
To get a $2K investment to be on par with the likes of the aforementioned CDPs, I can think of no other way to go about it.
Keep moving up the CDP ladder and you are only guaranteed two things, you'll surely obtain different, and you'll certainly spend far more than is absolutely necessary to improve your situation than if you consider an alternative path.