Just use a barbell, leave the DBs alone for next couple years. Voila.
"But, I need to get my guns reals hooge. And all the pro bodybuilders use dumbbellz mang."
Na dude, just squat, press, bench, row and dead. You'll get strong, trust me!
"You're stupidz, you dont know what you're talking about. I need to bring up my upper chesticle muscles with the peanutz."