I don’t have ownership experience, but a very good mate of mine has a Delphi and has arm swap fever. I’m round at his fairly often so heard a few iterations of its development.
He used to have the Audiomods 5 and it was excellent, really suited the deck, sonically and aesthetically. He’s currently got a Kuzma Stogi Reference on it, and to me it does sound very good, possibly a bit better, subjectively, than the Audiomods, but doesn’t look anywhere near as good. He prefers it though and says it’s a keeper.
I have a Delphi III with an SME V but would consider an Audio Note Arm 3 as an alternative. Some even prefer the AN to the V. I have an AN on my Gyro SE but don’t have a suitable armboard on the Delphi to compare them unfortunately.
When I first bought the Delphi I had decided to go for an Audiomods when the V came up for sale.
Jim;s Graham arm did sound excellent on his Delphi V.