In our 28-criterion evaluation of sales training and services providers, we identified the nine most significant ones — Baker Communications, Challenger, Corporate Visions, Force Management, IMPAX, Sandler Training, Sales Performance International (SPI) Richardson, Upland Altify, and ValueSelling Associates — and researched, analyzed, and scored them. This report shows how each provider measures up and helps B2B sales leaders select the right one for their needs.