Hey Charles, I have an extra pair of the clear glass V V 32b as a standby if something happens to the blue glass V V 32b pair that I am using now. I checked the blue glass, and they are labelled as being made my KR Enterprise. Not sure how they compare to the AVVT ones, or if they are the same? Anyways, I wonder how much longer the 32b tubes will be around, but it's good to know that the EML 300b-xls tubes are a viable substitute!
The SET and hi-efficiency speakers are a great way to go, and I will mention that hi-efficiency crossover-less speakers are an even better scenario, at least IMO!