If you're using the loading screens from this pack, then you want the updated loadscreens.2da. More entries in the .2da therefore a larger .2da. This .2da also includes all of the entries from the main pack.
Hello there! Quick question - I noticed that the loadscreens.2da file in this pack is a slightly different size compared to the same file in your other replacement loading screen packs. If I am using all of the packs, does it matter which loadscreens.2da file I'm putting in my override folder? Thanks in advance for your reply!