What speakers to use with vacuum tube amplifier?

[Stereo Fanatic]

I am interested in buying the Cayin A-50T integrated vacuum tube amplifier, after I have listened to one combined with a set of B&W's 705 speakers, at a store recently. The sound was really awesome, though the set-up in the store was not perfect to get the best sound distribution. I need some further advice on other sets of speakers and output requirements that will also combine well with the Cayin A-50T. Amplifier's power output: 2 x 35W (8Ω, ultralinear), 2 x 16W (8Ω, triode).
Music preference: classical music, instrumentals and folk. Price range: Up to $2,500.