Shrinking my system

Fritz Carrera 5" (you won't need a sub)

Maybe Ref 2A driven by a VAC integrated?

Check out the Sonist Recital 2's. Not well know yet, but
they will be. The high efficiency and the superb sound will
astound you. You may not even need a sub with this speaker.
Here's a link: http://sonistaudio.com/index.php?
main_page=product_info&cPath=13&products_id=49
Excellent sound/dollar. This speaker was the talk of the
Newport T.H.E. show last week. Check Steve Hoffman's
comments if you need someone with world wide respect. Here's
Steve's link with
comments:http://forums.stevehoffman.tv/threads/voxativ-
sonist-audio-speakers-i-heard-at-t-h-e-show-are-designed-
for-very-low-watt-amplifiers.358666/

Dynaudio uses impdedence correcting crossovers and that really helps with tube amps...not to mention they are great speakers to begin with. I recently spent some time with the B&W CM5 and was very impressed with this small monitor. It really had me scratching my head in comparison to my Dynaudios, which I drive with sub 20 watt tube amps.

ProAcs would be another good choice. Those three would be on my short list.

What's your budget? 5" speaker height? Really?