The right kite size for you is choosen based on the following parameters: Wind speed and your weight

Now you have a good baseline. Next you should factor in your level and riding style.

PRO tip citate "A kite is like an engine, e.g. a large kite will pull a lot, whereas a small kite will not"

Kitesurfing is an extreme sport but in generel there are two types of athletes - the clam cruiser and the wild freestyler. For the regular clam athlete it is better to ride a slow steering kite than a small and quick kite. The last mentioned kite suites wave surfers and high performance riders the best.