No point in using a Duke or Baron or other AT unless you plan to walk. As in, put on skins. If you hike for your turns, do a little traversing, an alpine binding has more functionality for a lot less $. If you don't hike, but like the idea, an AT is just posing.
Far as an alpine, a Jester is to give you the cool look of a Duke, that single spring heel and blunt nose and all, but not offer the function. And it's expensive. Why bother? IMO nothing beats Mojo 15's for retention + knee safety. You can get earlier years new cheap. Do not have a high opinion of the new (PX) Looks' design for pow (ask yourself if you want a lot of elasticity and resultant prolonged retention during a twisting fall in two feet of mush), never had a high opinion of Sollies' build quality
(but they're light and everyone else likes them so what do I know?)
Markers are not everyone's cup o' tea, but they have always worked for me and can be had cheap. Yes, they may release once in a while when you didn't need it, so not for mission critical apps in steep chutes.
FWIW, I have 183 Goats with Railflex's. Huh? Because it's cool to be able to move up for groomed/bumps/trees and back for pow/speed if it's the only ski you have with you. Do not notice any terrible loss of snow feel and my knees like the added leverage when carving. Incidentally, if $ are no object, the new RF's from Head are lower, and easily slide in and out of the plate. So you can take them off for travel...