Have posted a previous queston about the concord transformer t pro seat....am having a dilemma about what seat to get once my DS grows out of his group 0+ car seat. Am between the recaro polaris RF/the besafe izi combi x3 isofix or the concord transformer t pro which uses an impact cushion ( similar to Kiddy). Any thoughts? What about toddlers managing to wriggle out of the harness or unbuckle it when rearfacing? Is the impact cushion uncomfortable for toddlers? Do they mind being pinned in to the seat? My main focus is on safety, but also practicalities are important. I know RF is safer in front collisions, but what about side collisions? Sorry for the questions! Just need a bit of advice about this issue!