I have used Cardas Golden Cross, Audioquest S-4, Cardas Cross, Van Den Hul, and Discovery phono cables on my SME arms(I have owned 309, IV, and V). I prefer Cardas Golden Cross overall which I kept.
I also have made DIY phono cable using solid silver(pure silver) wire and teflon insulation, terminated with Neutrik RCA plugs and Cardas right angle DIN with great success. Believe me or not, I have this DIY phone cable as reference as now.
Contact me directly via email if you would like the receipe.