I love soursop and jackfruit, though the only type I’ve had is canned. There’s now an H-Mart in the area, so it would be possible at times to get the fresh version but the amounts and price are issues. Also, unlike with standard-fare North American supermarket produce, I have no idea how to judge ripeness. Sometimes you can seek advice from employees or fellow customers, but there may be a language barrier, or no one around to ask.
I think the canned route is a reliable first step when trying “new” fruit. You know it was picked at the proper time, and if you don’t care for it, you haven’t spent a lot nor is there a large quantity to either eat, or waste by throwing away.