I’m slowly working on building/rebuidling the JP gym sets. Still have my rocket, and neo. I unfortunately, missed the train on Jungle and fossil, and don’t feel much nostalgia for JP in those sets.
My issue, with collecting old back, is that you can’t see it in the binder. I LOVE the old back design, it IS PkMn TCG to me, but since you can’t see a set of it in the binder, it’s not a huge draw for me as a collector. Still love it tho, and have a LOT. 
As I’m typing this, I have 3 old backs staring back at me.
