i would defiantly get a second opinion, everyone has tears in there rotator cuffs, just depends how big they are, make sure you need surgery before you jump into anything, and on the other hand, make sure you can recover 100% without surgery.
i tore mine also, wish i had surgery right off the bat, i have lost like 25% of movement in that shoulder, sucks. but surgery is never a 100% guaranty. just be careful with your choices, and stay on the ball, because time does matter with these injuries.