I have been listening to Mesitersinger for a couple months now. Of the sets I have, my favorite is Kubelik.
After that, all these are good:
Karajan 1971
Barenboim
Solti
Sawallisch
Not so fond of these three:
Jochum
Varvsio
Keilberth
Karajan 1951 is sound-quality challenged, but seems like a good performance.
I am pretty much in agreement with these views. I assume that Solti is the second one with the Chicago SO, with van Dam as Sachs. I think that it's the better of Solti's two recordings; Sachs aside, the CSO cast is much stronger.
I'm less fond of Barenboim's, mostly because I dislike most of his cast (except for the two tenor leads, Seiffert and Wottrisch, who are both excellent). I wish that Sawallisch had a better Sachs than Weikl.
I agree with you about Jochum, Varviso, and Keilberth.
To my ears, the 1951 Karajan is among the most overrated recordings in the Wagnerian discography. It's poorly recorded, with a largely lackluster cast (or worse, in the case of Hopf's Walther). Karajan's stereo remake is vastly superior in ever respect.
If you haven't heard it, you might consider Dohnanyi's recording from Vienna 1975. It was issued on CD by Ponto, in excellent sound, with Ridderbusch as Sachs, with Janowitz, James King, and Kurt Moll. You should also seek out Kempe's second recording; I don't think that his cast is competitive any longer, and the sound should have been better (it's monaural, when EMI had already begun recording in stereo, alas), but I love Kempe's way with the score, and Grümmer is the best Eva on records. Another one that I love is the 1960 Bayreuth performance conducted by Knappertsbusch, which is better in reality than it looks on paper.