Im curious if anyone has had any experience with using the mail in service repair option with the new unibodies. I have a 15" that is being sent in this week due to speaker issues and graphic flickering. they wanted to test the system out maybe look at replacing the graphics/logic board and replacing the audio (as no system sounds, alerts or sound) the trouble is I already sent in a 2007 15" in to them in january and it was there back and forth for about a months time with issue after issue..coming back with no working audio, bad display, keys no longer illuminated, missing screws and cracked case. of course im a bit hesitant about it...but in general should it be fine or should I get other options? thanks!