Splitting hairs in ether weight but either way I wouldn't get them. The Z heel is notorious for cracking the heel tracks and braking especially when skis get over 80mm. Weight concern of a binding is overrated, a few more ounces in a better binding will be stronger laterally and will be more durable. Consider the Sth12 or the Tyrolia Attack 13, either of these are much better. Avoid the Squire, although it is light, the heel is a bear for a lighter skier with a short BSL to get into. Marker is coming out with a new $149 12 din binding for next season that looks like a good design.