Time for a new tube system.

Dennis Had is no longer part of Cary and I would suggest searching the threads for customer experiences in the last few years. My vague impression is that some here posted disatisfaction with either the newer team/support or the newer gear. 

Agree w/posts that if you move up to the bigger B&Ws that those 211s might not be powerful enough to be a good match. I'd at least find some B&Ws who can confirm good results w/similar amps. 211s, 845s etc. can sound great, but they prefer a fairly efficient speaker with a relatively flat impedance curve ~8ohms+ in general. If somebody uses them with lower impedance speakers and gets good results, that would be good to post about. Cheers,
Spencer 

I recently tried out the ZOTL 40's. I wasn't sold.

@rothwea, matching speakers with amps is critical and not every pairing works.  What speakers did you try with the ZOTL40s? 

Easy to drive 8 ohm Devores

B&Ws are traditionally not tube-friendly speakers. IME, a fair bit of performance of the tube equipment in use in this system already is left on the table on account of the speakers being harder to drive.

When shopping for speakers, look at what the manufacturer uses. You don't have a lot of power here, so you want a speaker that doesn't need much. Eight ohms would be the least impedance (particularly in the bass region- stay away from speakers that have dual woofers unless you know that the combo of woofers is 8 ohms or more) and the efficiency should be at least 92 db in most rooms (if a small room less efficiency might work).