You didn't like Strong World?
Hm, I recommend you all of them except Movies 3 (I have yet to watch it, so I can't really talk about it), 8 (re-make of Arabasta arc, recommendable if you're a Vivi fan though), and 9 (re-make of Drum Island, replacing Vivi with Robin and Franky). Particularly movies 4 and 6.
Movie 4 is about a race towards a particular island between pirate ships, organized by pirates and with a high reward to the winner. So naturally, Nami made all participate. They encounter some stuff on the way though, and it has some really funny parts and cool fights. Very enjoyable.
Movie 6 is about the Straw Hats finding a message in a bottle that tells pirates who consider themselves the best to go to a certain island and take the challenge there. They go and take the challenge there, with are a series of challenges instead that the SH take as they start deciphering the island's mystery, but they end up fighting between them somehow too. Excellent nakama interaction here, and very IC, it's second to SW in my opinion. The animation's different form usual though, be prepared.
Movie 7's also good as regards comedy, nakama interaction and has the peculiarity of adding a ton of Nami and Robin fanservice, but I found the plot to be a bit... weird, in my opinion. The reasons for the bad guy to be bad aren't good at all, but how Luffy puts it is hilarious. Watch it too
