I haven't tried the Tropico but Appletons can't be beat for an "alcoholic" Planters Punch. Never had one on the Diamond, but my favorite resort in Jamaica uses this brand exclusively & they are so fine.
Tia Maria is just not my thing so always stick with the PP while vegging on the beach. They start serving them at 11 AM. Have tried them in resorts on St Lucia & St Thomas - not good. The only other island where they make a good one is Tortolla - BVI. And I used the called liquor approached there.
Betty