Which is better to sweeten my food and drinks? Maple syrup or honey?

Well both are natural, contain antioxidants, but they are different.  Look at the grid below:

                                 Maple syrup             Honey
Cal (1 Tsp).                     52                                64
Sugar (g/Tsp)                12.4                            17.3

Pure maple syrup should be your first choice as sweetener because it contains fewer calories and sugar. Indeed, it is lower fructose and higher mineral content than honey.  Try to purchase raw honey instead of organic.

Get more info about artificial and natural sweeteners (click here).

Stevia: Health Benefits, Facts, Safety

The 2 Healthiest Sweeteners to Replace Sugar and Aspartame

Raw Honey vs Organic Honey: WTF is the Difference?