Help on some under $2500 speakers

Thanks for your help recommendations. I am looking for a pair of speakers for a 10x10 room to work with an entry level Naim amplifier. I am looking for a pair of "clean" sounding speakers that has good attention to detail, that actually is capable of focusing on bass.

My constraints are that (1) I am filling a small room, so I would prefer to stay away from something with a large footprint, (2) a good portion of my listening will be done at lower volume levels, and (3) given the limited power running through the amp, I'll need reasonably efficient speakers. I own a pair of Harbeth Compact 7ES speakers, now and my system needs more power to drive them properly.