Looking on walmart.com I see 0W20 and 5W30 are roughly the same price, similar situation in Canadian stores (Canadian Tire), checked Mobil 1 0 W 20 and 5 W 30. Considering Honda recommends 0 W 20 I wonder why not stick with that. Less start up wear and better gas mileage.
Unless I am missing a benefit I cannot think of. Price does not seem to be a reason.