Need help choosing an expression pedal

A spring return on it? I suggest doing a web search for that feature.

I haven't used one myself, but Mission Engineering Pedals offer a spring load option for their pedals. The spring always brings the pedal back to heel position.
They also have a Kemper-specific Pedal, but i don't know if this is available with the spring.

Yup Mission has a Spring Load Option for $14.