If you had pick one topic to be trained on out of this list, which one would it be?

Here's the deal: as a rep I used to get a lot of training but I rarely got to pick what I wanted to learn. It was mostly qualification, forecasting, negotiation, etc. I went through 4 different sales methodologies and countless "how to deliver a killer presentation" training.

As a sales manager, not so much. I was given a bit more space to pick the training I wanted, but that really didn't mean I could go out and get trained on anything I thought would ultimately benefit my team, because of course there's a budget you can't go over.

If your company would say yes to one of these, as a rep or as a manager, but only one of them, which one would you pick?

DISCLAIMER: the list below is biased as I came up with it based on topics I hear some salespeople want to be trained on more often. Feel free to vote "other stuff" and add your own!