Question: which expression pedal is the best?
Answer: Donner 2 in 1 Viper Mini Volume Expression Guitar Effect Pedal.
Korg EXP-2 Expression Pedal.
Boss Volume Pedal (FV-500H)
Dunlop DVP3 Volume (X) Volume & Expression Pedal.
Dunlop Guitar Volume Pedal (DVP4)
Hotone Soul Press 3 in 1 Mini Volume/Wah/Expression Effects Pedal.