When shopping for a paddleboard, here are some questions you need to answer:
What do I want to use the board for? Flat water, surf or a combination of both.
What is my budget and expectation? You pay for what you get, cheaper boards use cheaper materials with less quality construction methods.
How long do you plan on keeping the board? Especially with SUP Surfing, riders like to shorten the board for more maneuverability as they progress, sometimes it's better to challenge yourself with a board you'll grow into shortly.