COD4

Last night was a great night on COD4.. I've been trying for about 2 1/2 weeks to get to level 55 in COD4. I'm 5 levels away from my goal. I'm still wondering what I will do when I get to 55 do I throw it all away and get the cool medals or do I stay at 55 and never have and goals in the game again? I better figure this stuff out fast because I should be there by the end of the weekend or atleast hope to.. RainBow Six 2 is coming out but I still plan on playing COD4 allot I really enjoy this game.