I fish Saltwater so I have a place for Hard/Saltwater plastic, but I also fish the Fresh so other plastic has a place. I have Soft and Hard, and when I want Medium/Regular I just mix Soft and Hard at 1:1...50/50.
I like my solid Frogs to be Soft...my DES baits in either Soft or Regular...most Saltwater baits in Hard, other than some cold water slow stuff...alot of minnow/baitfish imitations get Regular...it varies, so I carry Hard and Soft.