April: Nayarit or Oahu

Hello,
I am planning a surf trip from April 8 to April 20th (give or take a few days) and am debating between Oahu (whole island) or Nayarit (between San Blas and Punta Mita) I'd be renting a vehicle at both destinations but am mainly looking to camp or stay at budget accommodation for much of the trip. One average how is the surf/crowds/camping/food/weather/budget accommodation? I'm from Canada so the trade off is a cheaper car rental in Oahu but the tanking Canadian dollar will make everything else more expensive; flight price is pretty much the same... Vehicle rental in Mexico is more expensive but the Canadian dollar goes a lot further in Mexico than the US.
I am planning a surf trip from April 8 to April 20th (give or take a few days) and am debating between Oahu (whole island) or Nayarit (between San Blas and Punta Mita) I'd be renting a vehicle at both destinations but am mainly looking to camp or stay at budget accommodation for much of the trip. One average how is the surf/crowds/camping/food/weather/budget accommodation? I'm from Canada so the trade off is a cheaper car rental in Oahu but the tanking Canadian dollar will make everything else more expensive; flight price is pretty much the same... Vehicle rental in Mexico is more expensive but the Canadian dollar goes a lot further in Mexico than the US.