I’ve owned both and most recently got a Prinsu due to their availability at the time. I will replace it with another K9 rack in the near future. While the Prinsu is solid, I can tell it’s build is more flimsy than the K9 rack due to the amount of give in the side rails when you hoist yourself up on the rear tire to reach gear up top. The anodized extrusions are also fading in color quickly. I had a k9 rack in Utah sun 365 days a year for 4 years and never saw any fading. Availability and the option for sunroof access were two reasons for Prinsu this time around but I would gladly give up that access for the strength and durability of a K9 rack in the future.
