PLEASE HELP!!! Blackberry 8530 or Lg optimus metropcs?

Im getting a new phone and i don't know which one to choice either the blackberry or lg optimus.I want the blackberry because i have never had one before but the bbm seems exciting. And the lg optimus seems a good android phone but i don't which one to buy. So please help me right now i have the finesse and i want a better phone so help me choice i will be really thankful. :)