Beethoven Symphonies - best perf + sonics on CD

Shouldn't HIP be HPP for historical performance practice? Then HIPP could be historical instrumentation performance practice.

Lloydelee, yes the Gardiner Missa Solemnis is very rewarding. I've enjoyed it for many years. Another I've enjoyed over the years is the Karajan performance on DVD, live from the 1979 Easter Festival. I think this performance does a good job of capturing the spiritual impact of the piece, actually coming across more as a spiritual event than a performance, if that makes sense. I've never heard the 1935 Toscanini performance, which many consider the best recorded performance ever - although questionable sonically.

Any other rcommendations for best Missa Solemnis?

This seems to be in competition with the Gardiner ;

Beethoven: Missa Solemnis / Herreweghe, Collegium Vocale Gent

Thanks, Goofyfoot! Sounds promising from the snips i just heard. I have read some say they prefer the scale and magnificence of Klemperer...I respected, but preferred the slightly more contemplative, smaller, nuanced Gardiner.

Loydelee, I just picked up the Gardiner Beethoven cycle. I haven't even been able to look at the discs yet to see if they're playable but I will give it a try once this cat finds a chair. Yes, surprisingly there wasn't a lot on offer when I checked to see which recommended recordings of the Missa Solemnis were still in print. I like the recording engineers at Harmonia Mundi so that recommendation jumped out at me when I saw it. The Solemnis is a monumental work but it would seem as if the record labels have shied away from it for some reason. I have a nice recording of Mozart's Missa Solemnis but that won't help any. Same text I would assume.