Jeff, thanks for your comments. The cause of concern that several have posted about comes from Paramount's own website (the syndication bible). Here are the Relevant portions:
"The complete Hawaii Five-O package currently contains 283 episodes. Viacom had previously sold a package of 282 episodes that was split into two groups: Hawaii Five-O (200 episodes) and New Hawaii Five-O (82 episodes.) Beginning in September 1997, Hawaii Five-O was repackaged as a single group of 175 episodes; 174 culled from the original 282, plus 1 episode that was previously unavailable (one other episode, 6916 "Bored, She Hung Herself", remains unavailable.) These 175 episodes (referred to as Hawaii Five-O 175 Digital) have been digitally re-mastered. The remaining 108 episodes are also available, but they have not been re-mastered."
"The syndication version of Hawaii Five-O 175 Digital has six two-minute breaks and a standardized program runtime of 46:30. "
You can find a lot more info in the "series" section of
http://www.paramounttv.com/
Steve