High efficiency speakers

Hi,
I am getting into low wattage SET amps (specifically the 18w Lamm ML2.1). I am told that to realize the full benefits of such low powered SETs, you need high efficiency (>95db) speakers with benign impedance curve. But when I look around, these speakers are often horn based, huge and unattractive (to my eyes), and have problems with low bass (either no low bass or needs powered woofers whose integration is a problem).
My question to the experts out there. Have you come across well designed high efficiency speakers that are full range, don't take space like Avantgarde Trios, and look as nice as a Kharma?
Thanks for your suggestions.