I've never been that manic about inner sleeves. I figure what horrible thing could possibly occur if a bit of the sleeve creases a bit when I ootch it and the record into the jacket? Will the vinyl sneer at me and warp because not every micron is equally supported? To me, the important thing is that the vinyl is protected from the scratchy record jacket cardboard and from any mote of grit that might be sneaky & intelligent enough to migrate inside the sleeve. On the other hand, sure, I truly love the plastic-lined paper sleeves that London, Angel, DGG, etc., used to use, but by the same token some of those inner sleeves have gotten a bit sticky over the decades.
Finally, now that I think about it, yeah, it does peeve me that the individual LPs in cardboard box sets (such as an opera) almost always warp because they're loosely packed inside the box.
Finally, now that I think about it, yeah, it does peeve me that the individual LPs in cardboard box sets (such as an opera) almost always warp because they're loosely packed inside the box.