I'm looking for a new seat for Ds1 who is 4.5 but only 14.5kg so can't go to a group 2/3 yet. He's currently RF in a Britax TWE, I now need that for ds2 who at 14mo is outgrowing his Group 0 seat.
I'm after a group 1-2-3 because as I said he can't go to group 2/3 yet but he wouldn't be in a group 1 for very long. I want the safest seat I can get that will fit in my car (2010 ford focus estate).
We're off to a car seat shop tomorrow to test some so would really welcome some opinions 
So I think my options are:
The new Britax Xtensafix (if I can get isofix points retrofitted into our car) I like the fact that it has a harness until 25kg which seems a huge benefit to me. I like Britax seats generally, however it's v new and I can't find any information on safety tests for it so don't know how it compares.
The Kiddy Guardian Pro 2 - hadn't considered this until I saw that it was considered the best buy by Which, not sure about the impact shield v 5 point harness but going to see if ds1 finds it comfortable tomorrow. Don't know anything about these seats other than reading the Which review.
Recarco Young Sport - the side impact protection looks good from what I can see when I looked at it in Halfords and it felt like a solid well built seat however it doesn't score that well on the Which tests (56%).
Any other ideas? Any experience of these seats?
TIA 