I've been playing around with software which changes the tempo but does not affect pitch...

Which do you prefer?

sp_world.mp3 this is the normal speed

sp_world_down.mp3 this has been slowed down...

https://www.xs4all.nl/~mp2004/bp/ for the software BestPractice

do none of you guys speed up or slow down the occasional track on your turntables?