>>4181412I used LR from v2 to Classic, and then switched to C1 about 5 years ago. Back then, LR was really lagging in terms of advanced tools, especially for color, but it has come a long way. C1 still has more advanced stuff like the skin tone uniformity tool, the culling view, focus mask, better overlay functionality, etc. Lightroom's biggest advantage in my eyes has been with cloud integration, but C1 has improved there a lot. If you're a beginner, there's definitely a lot more tutorials / resources / presets / add-ons for LR.
Sessions > Catalogs, better for my own organization, and better for working across different computers, when travelling, or with my NAS.
Love not having to switch between develop and library. With LR if I want to compare multiple images, I can either view 2 and have 1 of them switch, or grid view and magnify. With C1, I can just select however many I want and display just those, and I still have my full editing options while in grid view too. C1 also has a completely customizable UI, so I can arrange, order, and group tools and buttons exactly how I want, and hide things I never use.
Some things I just prefer how C1 does them, like noise reduction, sharpening, structure/clarity, using layers, applying adjustments to other images. Tethering is much better. Does still offer non-sub pricing too for those that care. Performance wise, I've had far less crashes / hiccups with C1 compared to LR too.