Optimizing my CD Source - what to do?


I've been following multiple threads on the topic of "Best CD Player for under $1000, or $1500, or (insert your budget here)", or similar.

I really need some assistance with the following questions:

If my budget is $1500 (preferably closer to $1000), and I'm interested primarily in Redbook playback -

1) Will my money produce real, obvious benefit over other players I've tried (see below), and the Sony DVP NC555es 5 disc SACD changer I'm currently using?

2) I'm running an Audio Mirror D2 NOS DAC; will I be just as well off getting a lesser player, or transport that has less in the way of processing but presumeably a comparable transport? For example, would the Rega Planet perform just as well as the Jupiter if I'm using the AM DAC?

3) I'm considering Rega Jupiter or Apollo, Musical Fidelity A3.2, Meridian 502.24. Any recommendations?

Backgound:
- My system consists of a Musical Fidelity Nu-Vista preamp, B&K M200 Sonata amplifiers, Totem Mani-2, Rel Storm III sw, various IC's, PS Audio statement spk cables, Pink Triangle 'table w/AQ PT6 arm, Grado Reference Sonata cart.

- I have tried multiple single disk players, including NAD C541i, Denon DVD2200 univ/sacd player, Sony DVP s7700, and none of them materially (indeed noticeably) outperformed my Sony DVP NC555es 5 disc SACD changer (ie on red book)
bdgregory
Parasound 2000 series transport,with some extra isolation and a good digital cable.
Have you considered using a stand alone transport with your D2 instead of a CDP? I'm using a Theta Pearl trasnport with my Audio Mirror D1, and while I haven't tried a CDP with the D1, I know some people might think it better to use a dedicated transport instead of a CD or DVD player.
Two ways to improve cd playback are to add the Genesis Digital Lens, which often yields results as if you modded the CDP/transport (before you actually take the step of modding), and use for digital IC the micro-priced Auricle Audio Design Encore Signature digital IC from Audiogon member, Joemazzaglia. The increase in detail (actually, the increase in "everything") delivered through your DAC with this unique digital IC is usually a desirable and significant upgrade.
if you don't mind buying an older player, consider the cal aria or tempest, for a very tube like presentation.
thanks to everyone for the input. I guess my tentative conclusions so far are:

1) Spending ~ $1500 on a top level cd player won't improve on my AM DAC performance
2) Seeking out a good dedicated transport, or CD that can perform as a good transport with the AM is a priority. A number of transports suggested, I have some research to do now, and I can spend the leftover $ on software or an IC.
3) A good digital cable is a priority
4) Consider a Genesis Digital Lens (or other Jitter reduction??)

Any other suugestions out there, or opinions on the above conclusions?

thanks again to all.