Generally for the partitas, Weissenberg is tops. Except for one thing. There's a record by Tureck on Doremi -- made when she was a youngster -- which is so incredibly perfect and exciting that it even beats Alexis.
Didn't see the Doremi listed on Amazon. I'll check elsewhere. I did find a VAI with partitas 1,2 & 6, though this was recorded later than what I would term "youngster." Do you have a date and/or venue for the Doremi, Mandryka?
Though I have some Tureck, I haven't found myself going ga-ga for her Bach. Not yet, anyway. Maybe the partita you speak of will be my breakthrough with Bach by this pianist. However, I do have a VAI entitled "The Young Firebrand" which includes some very impressive performances of Mendelssohn, Scarlatti, Brahms et al...and not a bit of Bach in the mix!
I'm going to have to investigate Weissenberg's Bach. I know that I have at least one LP somewhere in a box or on a shelf, but it will take a bit of searching to find it, and I have nothing on CD. Most of my Bach listening recently has been of the WTC, and for me Richter and Feinberg rule there. After a couple of decades of trying to convince myself that Gould was really it, I decided "Nah"--and gave my copy of the complete WTC to a friend who's a certified Gould fan. I DO have excerpts along with assorted other Bach works in a commemorative Gould LP box set, and that's enough for me. Other recordings from early in my discovery of Bach on piano--all on vinyl--were by Kempff, Argerich and a very humble-looking Educo LP of Lili Kraus doing shorter Bach pieces in the most heart-meltingly beautiful manner. I return to these all when the Bach bug bites.
Dirk