what speakers for 40 watt triode?

Hi, I've got Cary SLI-80 now, and love it in both triode and ultraliner mode, but I think I'll get best of both worlds if I get a more efficient speaker and just run it in triode. My Thiel 1.6's actually work quite well with the triode mode, but comparison with the UL mode reveals that there is a bit more spunk and size of soundstage to be had. I'm thinking nominal 8 ohm instead of 4, 90+ sensitivity. What do you think?

Have any of you lived with Cary SLI-80 in triode mode? Which speakers mated well?

Thanks,
Art