Just remember that the "pluses", like the park days on the pass, never expire. Generally speaking, the more days you purchase, the cheaper is the per-day cost. We purchased a 7-day adult PHP for $317, which breaks down to $45 per day. If you limit yourself to regular PH passes, the most days is 5. These are also more difficult to purchase in advance (fewer sources) than the PHPs. Disney's advance purchase price for the 5-day adult PH is $265, which works out to $53 per day. In this analysis you can save $8 per pass/per day by extending and this assigns zero value to the pluses. Anyway, there are still considerations under which you would prefer the PH over the PHP, but you shouldn't lose sight of the fact that the pluses don't expire.