Jokes aside, one must be careful in a few points when choosing a stick.
First, the blade.
Depends on which hand you're comfortable holding the top with, you will either end up with a leftie or rightie stick. Make sure to try before you buy one.
Second, the length. For a defender, I will recommend a slightly longer stick. For my height 1.71m, if I'm a defender, I will probably use a 97cm stick because the longer length allows me to reach further when defending.
If I'm a center or forward, I will probably use 96cm or below. The shorter the stick, the more the technical part is touched. So do try before you buy.
Third, the flex.
I will recommend a flex of 29mm for guys around 18-21 years old. If you're strong like me, choose flex 27mm. If you're a girl, 29-30mm is good.
Other than these three tips, feeling is the next thing to go for before looks! Hope I'm able to help :-)
I like the feel of the stick. Mainly with the thin shaft and also the flatness of the quest1 blade. The quest1 blade is unique compared to other blades because of it's low concavity. It is very bare minimal and it relies on good technical skills to execute moves well.