I made a little (!) one here.
comparing the exp. FM with the lin. FM on a simple sequence with 3 OSC.
https://www.youtube.com/watch?v=Y1Cwbu8-2go&t=7sMod.Wheel: OSC1 FM Amount
Slider1: Pushing OSC1 FM Amount further
Slider2: OSC2 FM Amount
very musical use of FM with the linear mode.
I wonder why a OSC FM Setting of 255 is not the max?
You can push this by adding modsources to it (Slider or DC pushes the FM amount further)
Pro: very exact and small fm amount changes possible
con:no way to sweep the FM from min to max with on modulation.