If performance or paddling fast and far is your top priority, then solid boards offer the best results on the water because they travel faster, smoother and with slightly less effort than an inflatable. However, solid SUPs are big items of kit, so you need to be sure you have sufficient room at home to store it and suitable means with which to transport it, such as a roof rack on your car.
For this reason, it’s hard to beat the versatility that an inflatable SUP offers. Bought as a kit, they come with a storage bag for when it’s not in use, making it easy to store at home, stow in a vehicle whilst travelling, or even carry on your back if you are walking in or out of the location you intend to paddle on. They come with a pump, still feel very rigid when fully inflated, and although slightly softer than a solid board, are more than capable of covering long distances if required. They are also better suited than solid SUPs to activities like going over bumps in white-water and offer more comfort if you intend to use your SUP to pull some of those yoga poses.