Good addition to the series quiet enjoyable and hard to put down if you like games like this.
The gun system is immense and almost impossible to find the same gun twice. If your a cosmetics person like myself and enjoy making your character look how you want and have what you want its definitely worth a look at. Though getting the skin you want may take some farming/grinding.
On another note about multiplayer. Once you hit a level close to the max level you may get kicked from hosts quite alot. It seems they only want the highest level when they are the highest. Even though its more about the gear then the level. I've been kicked alot to the point where hosting my own game is more of a regular thing for me now then joining them. This doesnt deter me from playing the game though.
Its worth every penny.