The Yara is a very good speaker, but the AP Tempo is even better. I auditioned both speakers side by side and think the Tempo is worth the difference in price. The increase in sound quality from the Yara to the Tempo is greater than from the Tempo to the Virgo (my current speaker). There are some good deals on used Tempo IIs and IIIs in the classified. 30 tube watts will be plenty to drive either the Yara or Tempo.
Hope you're happy with whatever you decide to get.
Hope you're happy with whatever you decide to get.