Hi @Dashen,
Not the most experienced here with bike racks but have had a couple of experiences.
For the sake of saving you time my answer is Thule all the way.
However, I have not tried Buzzrack or Holdfast, but I did try a cheaper alternative rack (similar design to Thule) but had endless problems with parts continuously breaking and half the rack not being able to be used due to having to wait for parts.
In the supplier's defense, they were great with their aftersales support but the product was just not of great quality. "It costs a lot of money to buy cheap", was the moral of the story with this specific item.
I also had a Thule hang-on towbar mounted, but you need to be careful how you load and secure your bike (specially wheels) as they can end up touching the ground, your car or worst be in the way of your exhaust. The last one can happen with the Thule Euroway, but you can buy deflectors to protect your wheels/bike.
Good luck on your bike rack purchase!
