What's the best cash back credit card in Canada?

Rewards:
- Welcome offer 10% cash back on all purchases for the first 3 months.
- 4% on eligible recurring bill payments and grocery purchases.
- 2% on eligible gas and daily transit purchases.
- 1% cash back on all other eligible everyday purchases.

Rewards:
- Welcome offer 6% Cash Back on all Purchases for the first 3 months up to a total spend of $2,000.
- 3% in Cash Back Dollars on grocery, gas and on regularly recurring bills.
- 1% in Cash Back Dollars on all other purchases.

Rewards:
- 4% cash back on gas and groceries.
- 2% cash back on transportation, dining and recurring payments.
- 1% cash back on everything else.

Rewards:
- Welcome offer: Get up to 10% cash back in your first 3 months.
- Get 1.5% cash back on all credit card purchases.

Rewards:
- 3% on eligible gas and grocery purchases.
- 2% on eligible transportation, dining and recurring payments
- 1% cash back on all other eligible everyday purchases.

Rewards:
- Unlimited Cash Back on Your Purchases.
- Earn up to 1.5% cash back on your spending* – big or small.
- Premium Benefits

Rewards:
- Welcome offer 10% cash back in your first 4 months (up to $400 cash back).
- 2% cash back when your Welcome Rate ends.
- No limit to the amount of cash back you can earn.
- Access to memorable experiences with American Express Invites.

Rewards:
- Welcome offer 7.5% cash back on all purchases for the first 3 months.
- 2% on eligible gas, grocery, drug stores and recurring bills.
- 1% cash back on all other eligible everyday purchases.
- 2.99% introductory interest rate on balance transfers for the first 6 months.

Rewards:
-Earn unlimited Money-Back Rewards on everyday purchases
-Earn 2% Money-Back Rewards in two 2% Money-Back Categories of your choice
-Earn 0.50% Money-Back Rewards on all your other everyday purchases

Rewards:
-Unlimited Money-Back Rewards deposited into your Account monthly and no annual fee, plus exclusive benefits
-Earn 2% Money-Back Rewards in two 2% Money-Back Categories of your choice
-Earn 0.50% Money-Back Rewards on all your other everyday purchases