Bookshelf speakers that renders 3D soundstage

The BMR Monitors from Philharmonic Audio are very very good.

I heard the Goldenear BRX at Axpona earlier this year. It sounded absolutely amazing and filled a largish room with sound. I think they were running on Parasound power too.

The room and speaker position is critical and Soundstage can be vastly improved through 1) digital room correction (e.g., Dirac) and 2) going with active speakers (e.g., Linn)

I third what "tapp" said....with emphasis on stands.

Dampened stands and KEF bookshelf speakers paired with dual subs will certainly create that 3D presentation you are looking for.

I use steel 4-post stands, with all posts filled with damping material. The speakers "disappear" when set up properly.

I've had several monitors "disappear" in various rooms and setups.  A/D/S L500s did it in the mid-70's, Morel M202s in the 80's, Boston Acoustics VRM50s in the 90's.  All had 6" to 8" woofers and 1" domes, some soft and damped, some hard and metallic.  All were on sturdy metal stands away from room boundaries in well proportioned spaces.  For $2K/pair, the BMR Monitors are what I'd look at, but the GR Encore XLS maxxed out would also interest me.  For much less, if you're a DIY guy, the Morel Ardon kit from Parts Express ($800.00/pair + veneer = well under $1K) is a textbook monitor.