Best imaging and sounding bookshelf speaker


I have a pair of Spica TC50's (crossover recapped). I'd like to hear your opinions of what you all think is the best imaging and sounding bookshelf speaker. I will always own my Spica's but I also own a pair of Apogee Centaur Majors. I simply haven't found a speaker that images as well and sounds as natural as the TC50's. Thanks in advance for your opinions.

Associated Eq: Van Alstine Super Pas 3imodified by Tom Tutay, Marsh P2000, Rogue 88 Tube power amp, Scott Nixon Tube Dac, Oppo DVD player, Systemdek IV Electroic TT with Rega RB600 and Ortofon Rondo Red and Jolida JP9 modified by Tom Tutay.
ponnie
I vote for any of the Green Mountain Audio monitors. I've heard several of their monitors and they have exceptional imaging capabilities.
I second the Sonus Faber. I would add the B&W 805D. Either way, you will be rocking! Keep us posted on your buying decision. Happy Listening.
I have a pair of Red Rose Music "Spirit" and "Rosebud MKII" and they both are very musical bookselfs. They incorporate a ribbon tweeter that is fast and dynamic without being forward or bright. The 5" woofer is very tight & tuneful. They image like "beast" but are rear ported and need to be place 4-5ft. from rear & side walls. I'm really impressed with the sound of such a small size speaker....Always enjoy the MUSIC!!!
For imaging, coaxial speakers are hard to beat.

I second the KEF LS50.

And if you can find them on second hand, Thiel MCS-1s tho they are on the large side of "bookshelf". I have always loved Thiels so here are some more - PCS1 and SCS4.