IMHO, Brittax makes the best designed seat on the market. Notice that they are the only ones who have a nice comfy pad at the buckle as well as velcro to keep the belts in place while getting the child into position. Also notice that there seats are amongst the few that do not have the plastic belt guides on the seat backs (don't think it makes that big of a difference in comfort but I do appreciate the extra detail). I just wish they made one in black leather! I'm such a slave to esthetics!
It's interesting to note that our 92 Q45 has two anchor points (though none in the center - the safest location) integrated into the rear parcel shelf.