We just got a 'new' car a month or so back (its 2011) and it has top tether brackets in the rear as well as the isofix. It coincides with DS2 nagging for a big boys car seat.
He just turned 4. We have used the Britax Two Way Elite since he turned 3 because we couldn't trust him not to take off the seat belt and that was the only seat that had the weight limit we needed and a 5 point harness.
So one year on. I have been trialling him in DS1's Recaro Monza seat recently and I think the time has come to get him his 'big boys' seat. I was just going to get another Monza as I have found the Recaros (we have a Young Sport in DH's car) to be comfy, and, um 'fluid repellant' which has been very useful.
However now we have the option to use a top tether as well, so I would like to do that.
I'm making the assumption that you can't buy top tethers as an aftermarket item unless the car seat itself was specifically designed to have them, so I will have to buy a new car seat which has top tether function as well as the isofix. I currently know nothing. I can of course google, but if someone out there has done their research already then I'd like some input please?
thanks