The Ultimate Collector's Series, or UCS, is a LEGO subtheme of Star Wars introduced in 2000 and was meant to be more detailed and aimed at older builders. These Ultimate Collector's Series sets tend to be larger, and more expensive than typical sets.
2016 LEGO Sets
2016 saw some truly iconic releases with sets from Ghostbusters and the introduction of the Nexo Knights. LEGO also released the licensed, but short-lived The Angry Birds Movie theme. However, LEGO did discontinue Legends of Chima, Pirates and also the LEGO Simpsons which only did see a couple of sets. The Creator theme really shined in 2016 with the release of the Volkswagen Beetle (10252-1) and Big Ben (10253-1). The shining star that year for investors was certainly the Ghostbusters Firehouse Headquarters and pretty much all the Speed Champions sets which have seen growth in the triple digits.