Your specific question was really very narrow. You really needed responses only from persons who have owned and used the rega 303, 808, and 2000 tonearms, if I understand your post correctly. Which is why I did not respond, except to Mijo on his political comment. I actually wonder whether anyone here has had personal experience with even 2 out of 3 of those particular Rega tonearms. I do have one opinion that you might find useful. I partially disagree with Miller carbon. The interaction between the headshell and the cartridge is also very important in determining the ultimate sound quality. Certain headshell materials seem to work better with certain cartridges or cartridge types. If you were to find that one or another of those rega tone arms sounded best, it might well be because of a favorable headshell match, assuming those 3 Rega’s might differ at the headshell.