In your taxable account should be Canadian ETF. In most provinces the dividends are tax free (negative tax in Ontario) if your income is below $45k.
Selling taxable accounts in retirement is interesting; it can be largely done without paying tax! The principle is tax free always, so the problem in determining taxes owed is how much was gains? If you and your husband both sell $35,000 in ETF/year, plus receive $5000 dividends, that could make up $80,000. Presuming $10,000 was priciple, $25,000 was gains, you would owe $212 in taxes (assuming no other deductions or income) in Ontario.
Now lets pretend you sell $5500 this year and its half principle/half gains. You would owe $275 if you had an income of $40,000 (marginal tax rates at the 20.05%).
Notice in the first example, principle made up a smaller percentage, I assumed some growth. Notice how I also said your income was $40k, the numbers change as your income grows. At a $40k income, canadian dividends are tax free, at higher incomes you pay tax.
To answer your question; it depends on current income, asset allocation (CDN vs. Non-CDN) and the allocation between spouses.
In some cases, its better to contribute to a taxable account then an RRSP; the TFSA always beats a taxable account. But in some cases (particularly low income ears) the taxable account is better. The number of people who fit this category is small, few people have maxed out TFSA, and enough income to spare to fund a taxable account. (note, this is for future contributions, this paragraph doesn't apply to money invested)