Speakers for EL34 amp: $1,500 - $2,000

For the type of music you like you can't go wrong with the Spendor 3/5.

Totem Forrest for exceptional imaging, soundstaging and stable impedance.

Daber Audio Monitor 3 speakers may fit your vision. Find they work well with my tube gear integrated amps. In my case KT 88 tubes.

Seconding Grinnell, the Reference 3a De Capo's are a wonderful option. They love tubes... I'm running mine on little Manley Mahi monoblocks; I have a similar sized room to yours. I run the Mahi's in triode mode (20 w/ch) and I can't run them any louder than 9 o'clock on the volume knob. Enormous soundstage, stellar imaging and tonality. Killer on female vocals!
If you can't afford the De Capo's, have a look at their little brother, the Dulcet. I've owned both and they're both great.

What is "tasteful pop"? Inquiring minds want to know.