Is the new controller with VST (variable smoke technology) worth the extra money? Has anyone gone from a pit boss that didn't have it to one that does?
Or take a look at the owner's manual from the Pit Boss website. It should explain almost everything you need. I think this is the one you are talking about:
The VST which is on the Pro Series Elite units gives you the ability to generate more peaks and valleys that produce more clean smoking. This helps smoke infusion into your cooks. The added value is well worth it to me.