When you go to a gig or practice. Do you use your gig bag or HSC. Guess I'm wondering if you trust the gig bag.
I have a hard case for my Jazz Bass but only a gig bag for my 5-string. I could use the gig bag for my Jazz, but why? The hard case provides far better protection and since I've only owned two basses since 1966 (three if you count the POS bass I bought in 1965) I tend to hang on to them for a good long while and I need that protection. I bought my current Jazz in 1985, so that's 35-years ago and it's still in great shape.
The Fender hard case that came with my '82/'83 MIA Jazz has a nylon molded outer shell with interior foam sculpting to hold the bass in place securely. The foam is covered with some nice black plush material similar to what you find in the luggage-style Fender cases inside. It's worked well protecting my bass for 35 years. However, the outer nylon skin has separated from the foam on the top middle of the case, which makes it look like it's bulging out. And one of the legs on the spine edge of the case broke off last year, revealing the underlying white high-density foam in about a 1½" circle. So I wanted a new case.
Ideally, I would have the same case that my 1965 Jazz bass came with when I bought it in 1966. I had the black case with the orange plush interior. But buying one of those actual Fender cases is about $200. So I put one on my wish list for Christmas. Well, Santa must have been confused because he brought me a molded case instead of the luggage style case. Ended up sending the very nice Gator molded bass case back and getting their luggage style case.
Their luggage-style hardcase is very nice and the one I got is black with the black plush interior. It's heavier than the case that came with my '65 jazz and the corners of the case are pretty square as opposed to the rounded corners of the Fender Deluxe case. Still, everything looks good and works well and the interior compartment with the leather-pull lid storage compartment has more than enough room for my needs.
My gig bag works fine for my much less expensive and much more easily replaceable 5-string, plus it has backpack straps so I can carry it on my back. That is handy for load-in and load-out because I can put it on my back and carry my Jazz in at the same time. But like I said it just doesn't offer the protection that the hard case does, and I'm not walking a mile in and out, so the hard case is the answer for my Jazz - no question.