So it seems like the only way to enjoy the K experience, while staying somewhat "future proof" in some capacity, and not completely breaking the bank, would be to get the Strato to store 100 4K movies (lets say you fill that within 2-4 years), then get the vault to hold your existing bluray collection, and PRAY you don't fill it because at that point, you'd be eating into your 4K capacity.
But the issue here, as many people have stated, is that the Strato doesn't have a disc drive. Its download 4K, or wait and pay a fortune for a 4K vault. That just kinda sucks since I buy pretty much 80% of my bluray discs on Amazon Prime since they have great price drops if you keep tabs on them, or find those bargain bins at BestBuy and grab $5 classics.
JTR Speakers, RSL Atmos, Kaleidescape, Lumagen Radiance Pro, Marantz Processor, Emotiva Amps, JVC RS540