Hi! Wondering if any of the Canadian moms have suggestions for car booster seats; my daughter is 4 and is probably going to be out of her regular car seat by the end of this summer - we have a Britax right now, but I can't seem to find any info regarding their booster seats and if they are sold/approved for sale here. Would love to get some feedback on what you are using and if you are happy with it ... thanks so much!!