That website has a few decent options. I am more the DIY style when it comes to esk8. If you just want something out of the box ready to go, most of those options are good. The downside is that much like those “hover board” things from a couple years ago, there are a ton of clones or rebrands that use the same parts.
You can see that most of them have the same core components. They use hub motors instead of belt driven, a semi-small battery, and cheap decks and trucks. For a first timer, most if not all of these boards will provide a satisfying experience (assuming they aren’t DOA). But like many other hobbies, once you build your own with higher quality parts, you begin to notice the massive difference in quality of ride.
A good example are those hub motors. The urethane around the wheel is so thin to account for the motor inside, you get little shock absorption. Not to mention all the urethane those wheels use on the prebuilt boards is always hard and low rebound.
So yeah, my vote is DIY, if you’re up for the task. The level of performance and overall quality you can get is outstanding if you’re willing to put in the time. If you just want the esk8 experience flat out less troubles, then yes a cheap prebuilt is the way to go here. The KooWheel has some solid reviews.