Atera and thule if your budget stretches seem very good – frinds have both and they seem as good (and expensive) as eachothger. I’ve got a Buzzrack Quattro, whcih is half the price, not quite as refined, but plenty robust and functional enough, but heavy (20kgs) – so keep an eye on your nose weight. Also with the Buzzrack the tilting mechanism doesnt always give enough clearance to open your tailgate – it doesn’t on my SMax, but it’s not a feature (or lack of) that botheres me.
However one feature I like on the buzzrack that I prefer over the Atera and Thule is that there are two hoops that the clamping arms are attached to. This meands that all 4 bikes are right next to a hoop with a nice short clamping arm. On the Thule and Atera there is only one hoop with clamping arms of different lengths and you need to thread the clamping arms through the bike frames, which can be tricky if your bikes are all different sizes.