Beat the game last night, was pretty good. I think I would rank the series as LIS > TC > BtS > LIS2. LIS had some higher highs but True Colors was pretty solid as well. I liked how they tried to keep the story a bit simpler, my main criticism of LIS2 is that they tried to do too much so have a smaller story meant everything felt a bit tighter.
It was a bit annoying though since at the end the Chapter 5 trophy and Platinum popped on screen but it didn't register in my trophy list. I have the screenshots and everything but I'm still at 98%. Apparently others have this issue as well. I hope I'm not actually locked out of it.