I am currently in the market to purchase 2 new booster seats for my 4.5 son Lachlan (~20kg) and 2.5 son Hunter (~15kg). Lachlan currently in original SnS Maxi Rider (purchased June 2006) and Hunter in SnS Royale (purchased May 2004). Hunter is at the stage that he is starting to outgrow Royale carseat and although Lachlan enjoys his Maxi Rider, I find that when he's asleep in the car, it provides no real head support. Hunter enjoys sitting in his brother's "big" seat when we go out alone, so no problems about him not fitting into a booster seat now. I've been looking around at all the booster seats on the market, and love that they all head extendable headrests for growing, taller kids. Both my boys are quite tall for their ages (probably take after my husband who's 6"5').
So I'm wondering if anyone out there has purchased or is using any of the following booster seats that I have looked at: SnS Maxi Rider AHR (~$399.95), Infa Vario-Max (~$149.95),Hipod Barcelona-Target (~$249.00), or Cargo Titan-Big W (~$228.00). Apparently from 18kg, all booster seats require use of Protecta Child Safety Harness (~$59.95). I've read that Hipod and Infa seats have performed rather well in safety testing.
I would really appreciate any feedback/suggestions as to which booster seat is best to purchase, as my children's safety is paramount to me, as it would be to anyone else.