Tubes for SF CD1

Was looking for recommendations for tubes for an SFCD1 - part of a SF Line 1, 4bsst, GM Europa set up. I was thinking along the lines of either Siemens E188's or Amperex PQ 7308's. Any comments are greatly appreciated.
I used the 7308's on an SF Processor 3 that were just fantastic (but expensive-paid $300 for a set of 5).Warm sounding with nice detail.