We've got a Britax safeway M in my car (rf to 36kg/125cm), and an avionaut sky 2.0 in my partners car (rf to 25kg/125cm). They aren't isofix, but really easy to install x
We went for the Nuna Norr as we had the Nuna travel system. Really pleased with it. ERF and Swedish plus tested!
We went for the besafe stretch and it’s amazing! My boy is high centiles so had to look at 36kg seats as I want him rear facing for as long as possible. The seat fits with seat belt and teathers but was so easy to fit xx
Axkid Minikid 2 x
Cybex sirona Z and we love it x
We recently got the Graco 360 one (not sure of the actual model name) and I really like it. It was a lot cheaper than some of the other brands but it works well for us
Another vote for the Joie 360 ispin. He’s very comfy in it and it’s so much easier than our last one!
We use the Joie 360 spin . Got it when she was about 7 months old and still loads of room to grow in it. Can do both rear and forward facing and is isofix x