they are decent enough bindings, but they do nothing that ATK Raider12s / Moment Voyagers do not do at nearly half their weight.
Rotations aka a 600gr classic tech binding just do not make sense to me - at all. They ski no better than all the tech bindings that weigh in at around 300-350gr. If you want a ski in that weight range Fritschi Vipecs have a better ride feel (front elasticty and non-rotating heel piece for a much smoother hard snow feel and better power transfer), where Tectons will be an even stronger skiing binding. If you are going to do limited skinning from a resort then Cast-ified Look Pivots are a good option as well, more so than Shifts that can be a bit finicky/sensitive to correct setup or Duke PTs (recently released Markers, so perhaps issue prone).
and just to clearify, the rotation part does not provide elasticity, it is there to prevent pre-release (that the binding releases in a situation where it should not). But as pre-releasing isn't much of a problem with say MTNs or the various ATKs, they do not need the "feature" and are able to build much lighter bindings that skis just as well - or even better in some cases.
in closing, if you plan to use the skis a lot in resorts then I would not go with a pin binding. Your knees will thank you later. Tech bindings are light and a joy to tour on, but their ride feel is harsh on hard snow / groomers and nearly all forces are transferred to your feet from impacts underfoot (not like alpine bindings where their elasticity mutes a lot of chatter) - so not ideal for prolonged resort use, something they are not from a safety point of view as well due to their release characteristics.
