For those Canadians out there, I've had a decent experience with: https://www.quadrigacx.com, and I believe it's the biggest CAD exchange.
The big thing for Canadians is on the taxation side. Trade on any digital currency is subject to capital gains- meaning they apply your tax bracket to half your profit.
If you trade digital currency for goods/services (ie. Use BTC as a currency), its considered barter trade. You get taxed on the converted dollar value of the transaction.
It appears Quadrigacx does not do any reporting to the CRA for your transactions, so of course all this would be self-reported at tax time.
It’s amazing to me how frequently discussions of bitcoin profits are mixed with a casual attitude towards committing a major felony. A lot of people made a lot of money this year doing very little work. Be happy you live in a society where this is possible. Pay your taxes.
EDIT: And for everyone worried about a crash in 2018 resulting in a big 2017 tax bill that can’t be paid, a reminder that you can carry losses backwards in Canada for up to 3 years and get those taxes refunded.
Their interface could use an overhaul but that's neither here nor there.