I have Szell's Cleveland and Amsterdam performances on vinyl. As far as I can tell, his interpretations seem pretty similar. I think the chief differences between the two relate to how they were recorded and the location they were recorded in. Cleveland's home is (was) Severance Hall; Amsterdam's venue has long been the Concertgebouw. The latter offers a warmer, more burnished sound while the former, renovated during the time Szell conducted, increased the degree of reflectiveness of the hall's surface structures, thereby imparting a more brilliant acoustic. Though both renditions are very fine, my preference is for the Cleveland performance, which seems to reveal more about the kind of detail and expression Szell wanted to convey with his orchestra.