Proof set storage...Lighthouse Intercept Proof set boxes anyone?...options?

Winter time is collection management season. I begin the long slow & systematic process of breaking open some proof sets for the individual denominational coin albums (in Lighthouse Quadrum Intercept 2x2 snaps tites) and some sets for preservation. The ultimate goal is sets/individual proof coins based around the PCGS 1936-Present list as a guide. I've been picking up pre-1936 classic design proofs (and key dates) for several years...smartly working from both ends of the timeline. At age 64 I intend this to me a project for my remaining lifetime

Existing proof sets are temporarily stored in bulky unstackable metal bank lock boxes but I need something standardized. Does anyone use the Lighthouse Intercept Proof Set storage boxes or have opinions of them? They are not large holding maybe 24 sets and priced about $1 per set or ~ $24 per box unless I stock up during seasonal LH or other vendor sales

Other options on the market appear as minimally improved and uneven quality glorified shoe boxes. I've been real pleased with the Lighthouse-brand products; are there any comparable options or ideas on the market for proof set storage?

Thanks for any opinion, advice or experience.