Everybody summed it up pretty well already. High quality parts, US based company that does a lot of manufacturing in Sacramento, and if you’re the type of person that appreciates having a rig with higher quality parts, their kits are a good value. And there are a lot of details in their designs that show they are true enthusiasts always looking to improve.
That doesn’t mean you can’t have a low-budget rig that provides you with hours of enjoyment, and it certainly doesn’t mean there aren’t other good companies making quality products.
I probably wouldn’t recommend a vs410 as a first vehicle, but once you’ve built a few kits or modded some rtr’s, you can fully appreciate what goes into them.