Small monitors good at low listening levels?

I had the same goals as you for my second (bedroom) system, and upon a recommendation from a very knowledgable audiophile buddy, picked up a pair of TAD TSM-300 studio monitors (originally made by Pioneer Electronics), and run them with a 2-watt 45 tube amp- great at lower and medium levels. Also- for lower level listening, I have found the preamp can make a difference here as well- in particular, the transformer-coupled passives (am using one myself in the above system) can be very pure and revealing at lower levels...