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