Speakers for SET 8 Watt 300B system?

Have a look at 6moons.com. You'll find tons of useful info over there for high efficiency speakers.

I can tell you that a couple of months ago I bought a used pair of Coincident Triumph Extreme MK II monitors. They are 94 dB efficient, and designed to be driven by low powered SETs, like the Coincident Franks, 300b, 8WPC I believe. Now, I am currently driving these with 500 wpc mono blocks, because that is what I have. I am extremely impressed with these monitors. They are extremely coherent, very articulate, fast, and they have great timbral accuracy. Of all the speakers I have ever owned, these please me the most. They are just great, great, speakers. I'm using them in a 15.5' x 19' x 8 ' room, and they play effortlessly at fairly loud levels.

Brownsfan,
Considering your long and happy ownership of the Maggies that's quite an endorsement of the Triumphs.
Charles,

I'm having very good luck driving the 94db/watt Wavetouch Grand Teton speakers with a pair of 8-watt 300B amps. In fact, in my 14' x 11' room, the results are nothing short of amazing. Good luck in your search.

Sm04,
I've read very flattering things about your Tonian Classic 12.1 speakers. I hope you don't regret replacing them.