Regarding the Inbal/Frankfurt M5:
I am slowly re-touring the Inbal box to see how it measures up to the Bertini, Chailly, and Gielen sets that have been more recently released. Strangely, I could not remember a thing about the M4 or M5 of this set. The M5 is very well done, and has a particularly exciting finish. Inbal can be a tad fussy in terms of pushing and pulling the music, but he makes it work very well. The Adagietto is a rather slow one, but Inbal does a superb job of highlighting the section that reappears in the finale.
Also in my re-tour, I was reminded that Inbal's M3 easily belongs in my very top tier of favorite M3's.