The usual suspects above are all very very good. You won't be disapointed in any of them.
My sleeper recording is the complete set recorded by Walter Weller with the City of Birmingham Orchestra on Chandos (and available from the Musical Heritage Society). Weller's pace and expression on all the symphonies just seems right to me. The CD set also has an extra recorded track of music many historians believe is the first movement of a 10th symphony.