Depends on your asset location regarding the $20K.
Pay down all outstanding, high interest debts such as credit card balances.
Student loan is next.
If there're still something left, try to pay down mortgage as much as you can. Top up your emergency funds in high interest saying account, assuming you have exhausted the Mortgage prepayment option for this year.
By paying down the debts
and controlling your spending via budget, you are guarantee to earn more than putting the $20K at risk by chasing the top performaning sectors.
Assuming you do not have any outstanding debts and need to top up emergency funds, you could max out your TFSA contribution room in the coming 4 years and invest 1 year GIC annually. Whatever interest generate will be tax free and you could use those as down payment for a modest condo.
Another option will be to max out your RRSP and TFSA contribution rooms and use those amounts to invest in corporate bond ETF (XCB) and real-return bond ETF (XRB). For the remaining funds in non-registered account, you could invest in dividend paying equities ETF (XDV) but keep in mind that it's heavily tilted and exposed to financial industries, which may not be your liking.
As far as picking Canadian stocks are concern, TRP is decent but it's a quasi energy play and you would expose yourself too much on energy if you have already owned one of ECA, IMO, SU, TLM, COS.UN, HSE or all of the above. Having said that, IMHO, investing George Weston (WN) in low 50s or Rogers Cable (RCI.B) in low 30s or Power Financial (PWF) in mid-20s are better in terms of risk return. You could "speculate" by investing Manulife (MFC) around mid teens if you think the company's woe on variable annuities volatility is done