Well, I finally made the switch from Tele skis to AT skis. For those not familiar with the difference, Tele skis (typically) use rigid plastic boots but the heel is never attached. This allows you to cruise along on the flats and climb up hills with skins. Here is Molly's Tele setup.
AT (aka Alpine Touring) also use rigid plastic boots but the heel can be fastened or released with the flip of a lever. The idea is that you release your heel for skinning up the hill and then lock it down for the downhill parts. Here are my new (used) AT binding and my super sexy new (also used) boots. Here the heel is locked down