Choosing the size of paddle is always intriguing. There are few ways to do so. The most common way is to choose a paddle based on your height. The taller you are, the longer paddle you should use. That method sometimes works, sometimes doesn't.
“Size is Power. The Longer the Paddle is, the More Blade Surface Area in the Water, the More Power it Produces.”
After years of paddling, we actually came out with another way of choosing the size of paddle. Simply put, size is power. The longer the paddle is, the more power it produces. The shorter the paddle is, the less power it produces.
There's no right or wrong is based on personal preference. When you're holding the paddle, the blade will enter the water. The more blade surface area in the water will give you more power, and vice versa. To sum up, if you want more power, the longer paddle is for you. If you wish to paddle more relaxing, the short one is your option.
“The Best of both Words, the Regular Size(220cm) will Give you Enough Power, while Relaxing Enough for your Long Journeys.”