Need help: Tannoy or B&W?

Two very different speakers with amplification demands. B&W’s are power hungry speakers, you would need an high current amplifier. OTOH, you can easily drive Stirling’s with an 50W class A or pretty much any decent class A/B amp.  Just stay away from flee watt amps :-) 

Are you building a system based on your speaker selection or replacing existing speakers? 

It would be helpful to know your rest of the system and genre preferences. I have owned both brands and personally would not consider going back to B&W or any multi-transducer speakers. I switched from 800D2’s to Tannoy Canterbury’s. 

No matter which speakers you choose, amp/preamp or Integrated synergy would be a key to the sublime performance we all strive for in our audio systems.

I would suggest you listen to both of those speakers, quite different for sure. 

Night and day differences there I'd personally choose Tannoy but I am of course not you. Take some time and listen if you can.

Very different sounding speakers. I am not sure how to cross-shop those...

Um, what??

I wouldn't buy either unless you had heard them.  I mean, I have a strong preference, but because they sound so dissimilar. I'd say if you can't hear either skip them and stick to things you can listen to.