didn't bother to break in my unit.
i figured if it is absolutely necessary, the manufacturers would have done that themselves because it would be to their own advantage.
also, the phosphor-based crt doesn't need break in so why should the plasma be any different.
i hope i won't regret it someday
what i did was to download a DIY calibration video via torrent
and use the results as my setting. the setting is very similar to cinema mode. so far i am very satisfied with the pq. colors are accurate pero malamig sa mata. di tulad ng mga lcd sa showrooms na very vivid yung colors pero inaccurate and masakit sa mata kapag nanood ka ng matagal.