@Wannikea ********

but there is still the possibilty they discontinue the 60 day entry on arrival, meaning when you leave after 90 days, you may only be permitted 30 days when you come back. The safest in my opinion is the mutilple entry visa ...but it is also the most expensive option.

We are also from Canada and have been doing the multiple entry visa for over 10 years. Right now it is true you can go without any visa and get 60 days, then go for a 30 day extension. After the 90 days, you have to leave the country, then you come back in and do it again. The only potential problem could be if they stop the 60 day entry on arrival while you are here ...and that could very well happen. If that were to happen you would need to leave the country and apply for a visa before coming back in. We pay the $325 each and sleep good at night knowing it is the best option.