I am of the view that if one has extra cash then it is a crime NOT to have an rrsp

Even borrowing might be a good idea since the tax refund can help repay the loan

We use our spare cash in other ways, between us our rrsps we have are in pretty good shape, our spare cash is used to buy and rebuild cars, this year there were several projects that came up so OH should be good for the next few years workwise, its for us a better way to save.

Name one. I can't think of any, that's why I started the thread. Even if you chuck it into a chequing account inside an RRSP, you still benefit from the deferred income tax.

TFSA only has a $5,500 contribution limit and are much less flexible because it's basically a one-shot investment (it's not exactly but it's pretty close).

Dividend tax credit on non-registered eligible Canadian stock is nice but you still don't get the money multiplier effect you would get inside an RRSP, and inside an RRSP you're not limited to Canadian stocks as there is no tax.

There's no benefit to using a corporation as some people seem to think there is, investment income is taxed at the full corporate rate and obviously that's more than zero.

Any offshore trick (are there any now) still requires you to take the money as income and pay tax on it first thereby reducing your capital.