Which LMS do you use and why?

I adopted Success Factors Plateau stepping into my role as the primary adminstrator/developer at my company. We utilize the Learning Management and Performance Management systems primarily, but are interested in expanding to Talent Management and Succession Progression. Can't say Plateau is the easiest solution to work with and most of my users hate it, citing poor user friendliness and a lack of reliability when it comes to module completions recording properly.

I'm currently talking to Saba about their platform at the reccomendation of a friend who's been using Saba for several months now. Just had a web demo with them and I'm really in love with their streamlined UI and easy self service features.