Any particular reason? I ask because, while I haven't heard it, I've read some good things about that recording.
I only have Bernstein doing Brahms' symphonies. I like them, but have nothing to compare them to.
Sluggish tempi. Weird balances. The Chicago brass at their most blaring.
When I want to hear slow Brahms, I pull out the Kurt Sanderling set instead. (It's gorgeous.)
If you want to give Decca some money for Brahms, get their Kertesz set instead. Beats drinking the Solti Kool-Aid.