They both sound better slower. Speeds until about 1932 were entirely all over the map. Remember HMV and Columbia and god knows who else were still using weight driven cutters until nearly 1940. They only started to put stoboscope markings on the cutters in the early 30's...although the ones used in Hollywood for the Vitaphone system were much more accurate and not weight driven. And a lot of dance sides were recorded a tad slow on purpose so that they'd have more bounce when played at 78. Who was it posted this on the old board quoting a performer from the twenties?
The syndrome that drives me the craziest are those Victor discs from 1923-24 that speed up( that is to say the cutter slows down) during the side. Drives me mad: Whiteman's acoustic
Where the Rainbow Ends is a prime example. IT's recorded so slow that at 78 the trumpets sound like kazoos.
Jim