Hi,
to start with anything would be better than stock SME cable, which is veiled and lacking in life. On the other hand is flexible enough and would not upset suspension movement on your Delphi. I prefer the Tak ag to HB, i have used both on my SME V with ZYX cartridges, finding it the less coloured of the two with better highs and speed. Both are nice cables and are flexible. In your case i would try the HB first as the XX2 is a fast cartridge and most propably it would be a better match with a nice glow in the mids. Whatever you choose make sure that does not affect the dynamics of your sensitive suspension.
to start with anything would be better than stock SME cable, which is veiled and lacking in life. On the other hand is flexible enough and would not upset suspension movement on your Delphi. I prefer the Tak ag to HB, i have used both on my SME V with ZYX cartridges, finding it the less coloured of the two with better highs and speed. Both are nice cables and are flexible. In your case i would try the HB first as the XX2 is a fast cartridge and most propably it would be a better match with a nice glow in the mids. Whatever you choose make sure that does not affect the dynamics of your sensitive suspension.