Best Tonearm for Thorens TD-124.

Have a Td124 mark 2 with an Ortofon AS212 tonearm.
i found at at a garage sale a Thorens TDK101..seems to have been a kit one would put together、this one never was assembled and there is the original tonearm that seems to fit perfectly on the 124 .should it go on instead of the newer ortofon?

Reed 3p 

That’s a great tonearm for sure.. But it’s kinda either the AS212 or the original unused tonearm that came in the Tdk101 kit..don’t even know if it’s compatible but seems as such..which ones better?

TD124 with long and short Reed 3p HERE

When I had my TD 124 I used an Eminent Technology II on it and that was a fine combo. I also had an Audiomods Classic II as another choice and that was a fine arm. I bet the SME M2-9 would be a great choice also.