$600 +/- Bookshelfs w/ Holographic Soundstage

Hello all,

Thank you all for your time & dedication to Audio :-)
This site has been a wonderful find for me (and a constant source of amusement for my wife watching me! LOL!)

I have been reading a bunch of the articles - trying not to clog up the forum with yet another speaker advice column - but have learned that it is the specifics of each individual situation that makes this such an exciting topic. So ...

I am looking to upgrade my bookshelf speakers - and would love input on my situation:

Right now I have a pair of B&W DM.601 s1 - that I am enjoying, but I feel their holographic soundstage is a bit limited.

This is my #1 priority - I love 'seeing' the music. My pinnacle moment came when listening to Rimsky-Korsakov, Sherezade on Primare driven ProAc Response D28s - when, with my eyes closed, I could tell you exactly where each member of the orchestra was sitting! That was when all of this began!!

Budget is self set at $600 +/-
Used / New all-ok
I'm partial to bookshelfs due to the size of my room (12'x10') in an NYC Apartment.

My current system:
Rotel RX-1052 Receiver (my upgrade dream right now is the Primare I30)
Rotel RCD-1072 CD
Technics SL-1200MK2 (w/ Shure M97xE)
B&W DM.601 S1 on Stands
Decent Wiring (Monster M850 Interconnects, Kimber Kwik 12 Speaker, I'm working on power cabling next)

What I've listened to in the last 48 Hours:
Art Farmer - Modern Art - CD
David Byrne - Grown Backwards - CD
Pink Floyd (bootlegs circa 1968-1974) - FLAC burned to CD
Thin Lizzy - In Sunshine or Shadow - LP
Radiohead - OK Computer - Audiophile LP
Miucha & Antonio Carlos Jobim - LP
Jorge Ben - BEN - LP Digitized to CD
Amadou & Mariam - Dimache & Bamako - CD
Pepe & Cheich - CD
Franz Liszt - A Faust Symphony - CD
Schuman - Frauenliebe und Leben - CD
Bach - Sonatas & Partitas - CD

Ok - I think this is probably more then enough info!

Thank you all so much & Happy Holidays
Ethan