Charles,
The amp comes standard with Mundorf silvers I think, and I was underwhelmed when I used them some years ago to upgrade the crossovers in a pair Spendor 9/1 speakers. I have since realized through reading a lot of user feedback that they aren't all that great.
Brian Smith of Audio Note Kits thought that V caps were a good alternative, but again, I had heard that they swayed a bit toward the super high def side, and I prefer a more organic feel, even if a bit of detail is lost.
I was able to have Duelund VSF specially fitted into my AN DAC 2.1, but there was no way to fit them into this amp, and I couldn't afford cast caps that I would have wanted anyway. The advice from Grannyring and others came at just the right time, and they are small enough to fit.
I am pretty sure that I will be happy.
Thanks