I am guessing that the financial system in Canada is not a whole lot different from the US and interest rates are very low. I would think it more important to protect the principal if you are older. If you are younger you can afford more risk and the stock market has proven, over time, to be one of the best investments.
I like a no load fund like Vanguard for long term savings. If you are very young that $50K can grow into millions (how many of them depends on how quickly the economy rebounds) before you retire. The earlier you start to save the more each dollar will be worth in the future. Mutual funds invest in a wide variety of stocks so that you are better protected from the ups and downs of such.
Being debt free is a truly liberating thing. You will have far more freedom to do things that you truly want to do rather than having to do things just to pay the bills.
I did all of our finances and always joke that while I may not have gotten the very most income I did not charge myself nor did I steal from myself. I do my own taxes too on the theory that if I made a mistake I am more likely to know where I went wrong and if I pay someone else I have to pay them and then pay the penalty if they err. Our finances are simple though. Your mileage may vary.
I am sure that you will get many more replies and probably with better advice but I did not want to see your post with no answers.
May you continue as you are and I know that you will be able to afford many Disney trips through the years and possibly retire there one day.
Slightly Goofy