Why do you feel that you need high efficient speakers? In your small room with 60 watt amps and your musical tastes I would suggest a LS3/5A type of speaker. Spendor,Harbeth,etc. You can get a new Spendor S3/5R2 within your budget.
http://store.acousticsounds.com/d/94333/Spendor-Spendor_S35R2_Classic_Stereo_Speakers-Speakers
BTW, there is a pair of Harbeth P3ESRs listed here for $1600! Also the Spendor S3/5R2 is listed here for $1200!
http://store.acousticsounds.com/d/94333/Spendor-Spendor_S35R2_Classic_Stereo_Speakers-Speakers
BTW, there is a pair of Harbeth P3ESRs listed here for $1600! Also the Spendor S3/5R2 is listed here for $1200!