I'm playing it and it is indeed a very good game. Blizzard managed it to balance the game in a very nice way. It is good for both casual/competitive gaming. Besides that it does not feel like your typical FPS game, since it has a lot of teamplay orientated features/skills and different roles like carry/support/tank. I can assure that you won't regret investing in this game. Blizzard is also a great video game company which puts a lot of effort into the game, trying to keep improving it. I noticed that it is the most fun playing with a group of 3-5 friends since you can pull of great plays with communication.
In case someone decides to buy the game, hit me up and we'll play a round or two
Edit: A medium good pc should be enough to play the game at around 60 FPS, which is crucial since it is such a fast FPS. People telling you that you need an high end 5000$ PC are lying