Where to start?
First of all, this game is pure gun-wielding, phase-walking, turret-blasting, bird-of-prey-flying Fun with a capital F! There is such a never-ending torrent of guns, shields, grenades, rocket launchers that it will make it hard for you to get any emotional connection with your current weapon.
But that is a good thing! In other games where you use the same few guns all throughout the game, here you'll rarely spend more than an hour with one. Well, at least in the beginning when leveling up is a fast affair.
The leveling up is also a great chance you can use to create significantly different characters to fit your playing style better.
Talking about style, the game's visuals never stop to amaze me. It really feels like you jumped into a very well drawn comic book and fighting through the story real people only read about.
The story... well, it is there but you won't play this game for it that's for sure. If you don't live to loot then you'll be disappointed.
Or maybe not, because with all the DLCs included you get so much content that you won't have time to realize the paper thin story. I never did and I'm usually someone who picks up on such major details.
To sum up all this nonsense: GET IT + PLAY IT!