My favorite is Resident Evil 4's storage system, using the case that allowed you to fit in as many items as you want, so long as you can make it fit. Really wish they would've stuck with it. I hated RE5's system.
By the way, I'm looking to play Revelations soon, and I'm wondering what the storage system is like in that game?
In that case RE4 is considered the 3rd type magical pouch. Since you never see Leon carry the suitcase and obviously it'd be a magical suitcase to fit so many weapons.
Revelation uses magical box system (for weapons only) with limited of 3 weapons you can carry and limited ammo depending on how many ammo pouches you have collected and also limited herbs to 5 & grenades. It has these upgrade cards you can install to some guns and remove them anytime you want tru the magic box.
Even though it's abit annoying but the most realistic type would be Outbreak & Zero where you really have limited number of slots. But because of that i end up using Yoko quite frequently due to her backpack.
Oh, I didn't see 'Revelations' in the magical box option up there. Duh. Thanks for the info.
And yeah, I hated Outbreak's system. You could only carry four items at once. Didn't mind Zero's. At least you could carry more and the action didn't continue even if you opened up the menu.