A combination of both for me. I appreciate the bottles that are interesting to me & have them "front & center" on a shelf with the lesser interesting (& used) inks in their boxes, stacked on a shelf behind the "pretties."
I decided to follow in the footsteps of our fearless Leader, Ms Amberlea Davis & brought my inks out of the hidden away protective spaces & into a glass dooored cupboard of five shelves. It worked well, for a time, but this winter I had to "expand!" I reconfigured a built in storage cabinet with 8 shelves in a hallway. Because it has a solid wooden door, I only see these inks when opening the door. But I also appreciate my "excess" is not as obvious to visitors, who may be less enthusiastic about my sickness. (No reason to inspire commentary, if avoidable!)
I have no concern about the preservation of my inks; I doubt I will live long enough to notice any changes & having already witnessed a few bottles of a US Boutique ink, turn foul in their boxes, without their even being opened, I use Phenol in inks I have concern for & hope for the best, for the remainder.