best buy de-tangling brush

This hair brush is amazing, my girls long hair gets really tangled all the time but especially after washing.  They both refuse to go back to the other brushes and we have tried the other de-tangling brushes but they both swear this is the best.  Great value for money, I have bought 3, one for each of us (and they lose them all the time) so will be buying more if these break.  The first two have already lasted 6months and show no signs of breaking.