High Efficiency Speakers

I'm building an affordable all-tube system, and I need to start with very efficient speakers so that I don't have to spend $$$ on a SET amp. I'm targeting a 2.5w SET w/ 2a3s tubes from Bottlehead. Consequently, I need 96db+ speakers. I primarily listen to accoustic guitar, classical, and vocals. What speakers would you guys suggest I listen to?