I just finished it last night and thoroughly enjoyed it. It didn't top the first for me, but I was never expecting it to. The gameplay is pretty much perfected with improvements to the enemy AI, and a few sequences are terrifying to play through. My only issue with the game is its narrative pacing (moderate spoilers)
The first days for both Ellie and Abby drag a bit, particularly the latter. After the open area exploration with Ellie, the next two or three hours feel a bit stale with little plot development. I was unengaged for roughly 3-4 hours of Abby's section for similar reasons, but her story picks up once you reach the WLF base to get Yara's medicine. Given how beautifully the story concludes, these are minor issues in the larger picture, but this game loses the tightness of the first for good and bad reasons.
Overall I'd say it's a 9/10. Looking forward to the inevitable Part III