This is one of my favorite anime's of all time. It's the one that started it all for me actually. The Soul Society arc is a masterpiece and the Arrancar arc and the Invasion of Hueco Mundo is nothing short of epic.
It's good, but I feel like this would be a lot better if everything after the Sasuke retrieval arc wasn't all filler. Other than that, it's a solid anime, feels nostalgic, as I only saw about half the series when I was a little kid.
I initially dropped this after 7 episodes and gave it a 4 because I thought it was boring. What my dumbass teenage self should have realized was that I zoned out for half of those episodes. This is amazing. Please give it a try if you haven't.