the perfect tonearm

JCarr, You wrote, "the Triplanar and other tonearms that have drop-down headshell sides may have problems with wide-bodied cartridges like the Allearts Formula One." What model of Triplanar have you used that has such a headshell? I have owned mine for more than 15 years, and, altho it is not sitting in front of me at the moment, I could swear that the under-surface of the headshell is a flat plane with no "sides" to it. Moreover, to my knowledge there has been no change to the headshell design in the entire long history of the product. Your warning would still apply to tonearms that DO sport such headshells, to be sure. Anyway, the Allaerts cartridges are unusually wide-bodied.

Dear Franz, Unless the bearing of the Clarify CF is radically different from that of the Clarify, I don't know why you would even consider it, given your experience with the latter (and assuming you correctly assessed the cause of the problem). The M-S 505 is an excellent tonearm but overpriced at $1080, IMO. With patience I think you can find one for less. In the under $1000 vintage Japanese tonearm category, consider also the Lustre and Victor tonearms. Sometimes you can find an SAEC 308N for that kind of money as well. The GCPH should have enough gain for a mid-output MC, I think. And can you say why you think the NAD amp is causing hum in that system? Phono hum is caused by a long list of grounding issues that usually occur upstream from the input of a linestage.