Shortlisting efficient speakers that will work well with under 10 watt directly heated triodes...AND that will fit in our little (12x15) living room. Not convinced they exist, but the search is enjoyable. My list thus far includes: Volti Rivals Altec model 15s (combo of new and vintage parts); and Tekton's The Perfect SET 15 Wondering if anyone here has heard the 'The Perfect SET' or the new '15' version, which is a bit more efficient. In particular, anyone heard them with SET amps? Thanks!