Which LMS do you use and why?

Josh, we went live on Intellum's Rollbook last September and we've been very pleased. Ours is 100% corporate use across 40+ locations. We use it to host courses built in Storyline and Studio and some scheduling of Webinars through their Sessions tool. We also host all orientation courses online, effective January of this year.We really like it- easy to set up, navigate, report out of, and use. It's just simple to understand without feeling stripped down: it does what we need it to do. Their support is quick and accurate, and I've been nothing but pleased with our relationship to date. We support 800+ users on this system with very few problems.