I have used Luminar 2018, Luminar 3 and Luminar 3.1.1 (latest). The 2018 version was no good. But, once they added the Library feature, things are looking better and a wide customisation options for photo editing. The speed of operation is also improving with every release. But still they need to work on some parts. My review with Luminar Before and After images here: Luminar 3.1.1 Review with Before and After Images