I purchased this compressor for my two inflatable paddle boards. It has always worked enough to keep it. It takes aprox 10 mins to fill each to 14.5 psi. I read it can fill 4 however I've found it starts to overheat on the end of the second board. It will turn off at around 13 psi and I have not waited to see how long it would take to cool down as by this time it has been almost 30 mins to fill both to this point.
I think it's worth it 100% if you have one board. I'm not sure of other compressors take as long or longer. If you have three boards I'd say expect a cool down period or keep them inflated. Using my boards in the summer the outside air temp has been in the mid 80s.
I board 3-4 times a week and inflate and deflate each time. I've had this for about a week and it seems to be holding up.

She had bought a high end SUP this year and choose a inflatable because it is easy to store. What she did not realize it the extreme effort required to inflate it. Inflating at home and carrying on the car is a pain, likely not good for the board because she has to put it flat on her car. Manually pumping it up at the beach left her exhausted. She decided to buy one electric sup air pump. Within 1 minute the board looked inflated (actually only at 5lbs). It took about 5 minutes before it hit full inflate. We were in the house and could hear it run, noticed when it shut off, but it was not horribly loud. The unit is small and weighs less than 5lbs. It can only be plugged into the car.