The output transformers of the Paramounts can be wired for 1 ohm. What we do here is take four Paramounts wired this way, and run the transformer secondaries in series, for four ohms. We're getting about 36 watts. This way you don't have to worry about one tube hogging current, each has its own power supply.
PJ and I have also been discussing the possibility of a parallel SE pentode amp. There may be some experiments with that concept later this year.