About sharing canadian phone cards here please!

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Hi guys,
I'm an Asian and landed to Canada 2 weeks ago.
I'm about to buy canadian phone card and complicate to choice it.
My options are;
1)when I visit my country I wanna use this card outgoing and incoming calls and SMS from other countries (especially Canada, French and Sri-lanka).

2)long valid card.(even not so cheap)

3)Especially I prefer to use SMS more than outgoing calls

Anyone please share your valuable experience here and I'll really appreciate for it!