I would save up for something selectable seeing how you live in CO even though we have a part time 4wd system.

I’ve run a Lockright and Aussie in some of my other rigs up front. Aussie was quieter and better but both worked well and will give you a armstrong work-out by the end of the day especially in the rocks not to mention the change in turning radius. In the snow and ice I didn’t care for them especially off-camber.

With a SAS you’re less likely to need to lock the front as opposed to IFS.