I've posted before about our carseat troubles, basically we bought a Britax First Class Plus for DS (14mo, 11.5kg ish) who was in it RF in my car. Then the car had to be replaced, and the new (actually quite old but new to us) car has stupidly long buckle anchors that caused bad buckle crunch when fitting it RF.
We absolutely cannot afford an ERF car seat, its out of the question, they cost nearly as much as our car did.
I have been offered a secondhand Kiddy Infinity Pro (from a trusted and known family, NOT off Ebay or similar) and am wondering - that would be safer than the FF Britax we are currently using, right?