I somehow find the 66 attractive in appearance - beauty in the beholder's eye, sort of.
Gehmann designed a very accurate rifle in the 66 - his world championship medals probably influencing the design - though I have heard that the 66 is not made anymore because of the very high cost of manufacture.
The new "Mauser" 98s are made for them by Gottfried Prechtl and are nice guns though with exact Mauser replica actions being made in South Africa and the USA at budget prices by Granite Mountain, Satterlee Arms and Waffenfabrik Hein at much lower prices, I doubt the "Mauser" name would go very far. For very high grade Mauser actions, Europeans have always had the option of buying from Hartmann und Weiss, Karl-Heinz Ritterbusch or Theo Jung anyway. And Prechtl sells the same rifles that he makes for Mauser under his own name as well as actions to Reimer Johannsen for customising. Quite a confusing marketing mish-mash there.
Very seriously, if I could find a way to get the 66 that I told you about stocked in a classic style stock, I would buy it. Am not sure that is possible, hence my hesitation. And, as far as classic stocks are concerned, I meant the classic British stock with the rounded forend, no cheekpiece and the more pronounced drop compared to the American classic. I am sure you knew that my preferences were for the British classic, my being an Anglophile!