I don't know the Jansons recording Barry, but I hope you won't mind me piggy-backing on your thread instead of starting a new one to ask about another M8.
The 1950 live recording of Symphony No. 8 with Leopold Stokowski has been released on a number of labels including Music & Arts and Archipel. This August, a new release appeared on the United Classics label:
http://www.amazon.com/Symphony-Thousand-Stokowski-Conducts-Orchestra/dp/B00D2K1YLY/ref=sr_1_2?s=music&ie=UTF8&qid=1378439251&sr=1-2&keywords=mahler+stokowski
(http://i.prs.to/t_200/unitedclassicst2cd2013008.jpg)
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Does anyone know if there is any difference in the sound quality of these editions, and can you make a recommendation of which would be the preferred one to obtain? Thank you.