A matching amp for Kharma CE 2.0 for approx. 3K

I'm about to upgrade to a pair of Kharma CE 2.0 (8-ohm, 89db) speakers and feel that I must upgrade my poweramp as a result. I'd appreciate your opinions on a suitable power amp (used) for around $3K. I'm open to both, tube as well as Solid-State.

My current Gear:
Graaf (20/wpc) OTL tube intergarted amp
Graaf 13.B tube preamp (not using)
McIntosh "C32" SS preamp (currently in use)
Copeland CDA 289 HDCD player
Speaker-cables: "Zero" by FMS
ICs: ZuCable
Speaker: ProAc Studio-2 (15-years old)
Music: bosa-nova, loungy, jazz vocals and electronics.
The listening area is large, a living-room/kitchen combo space about (35' X 20' X 10' ceilings).

I love the look & sound of my OTL. Also, with the current speakers, I find the solid-state McIntosh preamp works better (more open & better base) than with the tube preamp.
I'd like to be able to use my tube preamp (paid a lot & it looks better) instead of the Mac but wondering if whether I should therefore go for a SS amp instead of a more powerful tube amp. What is your opinion?

Thanks