Thorens TD 166 MkII with SME tone arm

Faradayblue, I'm not saying it's not worth upgrading, I'm saying it's not worth the expense of current SMEs. A Rega RB250 will give you a great leap in performance over the Thorens arm for a fraction of the price of those SMEs you listed, with an arguably equivalent sound quality. I buy old classics all the time and tweak them to their best performance, but there is a limit beyond which it is no longer economically feasible. If you have the cash, and aren't attached to your 'table emotionally, then for the price of the arms you listed you could get quite a serious rig, or even one of the new Thorenses which come with Rega arms included, the 850 particularly getting good reviews, a true high-end 'table, and selling new for $900 including Rega arm, though you wouldn't recognize it as a Thorens. I'm not sure if you're aware, but the cheapest SME you list sells for $1550. Since you have lived with the Thorens for so long, then it is not an issue of money, but of enjoyment and quality. The Rega arms will stand up in the company of the SMEs without embarrassment sonically and give you more than you expect. If you need some good info on Thorens 'tables, the best website I've found so far is at http://www.xs4all.nl/~rabruil/td124page.html, which has a section towards the end on various Thorens 'tables and their build quality/value. Good Luck.

Listen to Johnnantais, voice of experience and wisdom.

The overwhelming opinion among Thorens experts in Germany is that the Rega 250 is not a significant improvement over the often underrated stock TP16MkII arm, especially since a Rega costs twice the used price of the Thorens.

Thankyou for all the opinions and advise. You've changed my mind regarding the arm I'll put on the TD166 MkII. There seems to be more Rega 250s and 300s available than TP16MkIIs unless the TP16MkII is attached to a TD160. If the cost of a TD160 with tonearm is cheaper than the Rega 250 I may go that way. Then I'll have another table that I can upgrade at my leasure.

Regarding other tweaks: Can I do better than the Benz Micro Silver with this combination? Should I change the mat? Suggestions appreciated!

Faradayblue, Yes, change the mat! You can then transfer it to a TD160 when you get there. I would wait until you get a better arm before upgrading the cartridge: you will hear a significant improvement with the arm alone, and the mat. There are fans of all kinds of mats on this website: for myself, I am considering the Boston Audio Design Mat1, a heavy graphite mat which will push the performance of your 'table by a surprising amount: I'll be putting mine on a Lenco and on an Ariston. There are so many mats I've forgotten all the names: start a new thread to the effect of which mats work best with metal platters to get this info. I have kept the bearing/platter from a TD160, which is a work of art, one of the best I've seen. I plan to build a whole new 'table around this platform. With the 160 you'll have the platform you're seeking for those SME tonearms, and don't believe anyone who says these 'tables aren't "serious."