etw

I have a Kinetic Road Machine that I generally use in the winter or in bad weather. It is not always the most inspiring. Thinking ahead to the winter months I am considering using Zwift or one of the other online training programs. I am debating whether it would be worthwhile to upgrade the trainer with the Control unit.

I am not sure if the Control unit making it "interactive" is necessary or much of a plus. If people have found it to be a really significant difference or improvement I might consider the expense. Any thoughts or comments about this?