Easy to carry, easy to attach without ISOFIX, fits on most new cars. what more could you want? I have not and do not plan to collide as crash safety, I can not comment on;)
I'm very happy with this seat. Stood and chose between this or the "Sleep". It was because of this. a very good campaign at Mekonomen and weight.
I also bought the ISOFIX base and it was a very good buy. Very easy to install and very easy to just click into the chair. Getting off the gird every time is worth gold. Easy to move up the belt as the child grows. Easy to drop by and tighten the belt. Functionality with magnets in the belt protection so you can clip it up while you put in the child.
Nothing negative is that I think the sun visor is a little short. I would like to have it a little longer when in the deployed position eager to fall back a little. Our children get very sweaty neck if we travel a longer distance. I do not know if it is so in other chairs, but a little annoying it is.
I have the infant seat in the back of a V70 and there is no problem with space for front passenger seat and the chair has good seal.