Great looking stuff! Although i'm not a fan of rubs with jerky. But that's just personal preference.
I've recently been considering an excalibur 9 tray, but alas don't really have the space for it in this shared house. I currently own one of the plastic ones like that, and while it does the job, i often find the swapping around of trays to be a PITA. The excalibur is pricey, but i like that if i know the total time, i'm free to walk away, unlike with my Andrew James model. The models with a central chimney also make fruit leathers a lot more of a pain than they need to be as you can't simply rip off a piece of parchment and you're away.
Do you ever use liquid smoke? I was pleasantly surprised by it (mine is typically a soy, l+p, honey, sugar, liquid smoke, and then whatever catches my fancy be it pineapple juice or chilli flakes etc.
A jerky run is on my "yes dear, whenever i get a chance" list. This rather tempts me to just get it done.