Faster command to remove headers for files ina directory

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http://www.unix.com – Good evening Im new at unix shell scripting and im planning to script a shell that removes headers for about 120 files in a directory and each file contains about 200000 lines in average. i know i will loop files to process each one and ive found in this great forum different solutions using grep, sed, awk, head, etc. But according to the above scenario and your experince and knowledge which command is the best for performance and does the homework faster ? Thanks in advance (HowTos)