Tamrac system 8 for some of my Nikon gear. Tamrac convertible bag, also for Nikon. That one I have worn out until I have had to repair it with glue, needle and thread, whatever. Domke f2, which some people think is counterfeit because it's gray. But I bought it so many years ago, I don't think there were any counterfeit Domke bags then. I've used it for Hasselblad and and then for larger Nikon cameras and lenses. It's right for my D700, 180mm F/2.8 AIs, 17-35mm, etc.
Domke F-6. Great bag. A home away from home for Leica gear. Works for Nikon film gear, too. I have one in olive and one in the waxwear.
Domke F-5xb. One black, one khaki. For Leica gear, mostly.
Domke satchel. I think the number is 803. A little tight for the Hasselblad. Better for Leica or Nikon.
Domke roller bag, for Hasselblad.
Think Tank. I have three shoulder bags. The smallest one is for Leica gear. It's bulkier than the Domke F-5xb and doesn't hold much more gear, but has places for batteries, film, filters, cleaning supplies. The next larger is good for either Leica or Nikon, but holds more lenses and a second body. My largest is a good Hasselblad bag, holding a body with lens, back and finder, plus two more lenses and an extra back.
LowePro Nova one. Nice little bag, perfect size for a SWC or XPAN. I no longer have either camera, but I still have the bag.
A big LowePro bag much like a Domke F2 but bigger. Currently my best Hasselblad bag.
And I have a Think Tank sling bag.
The must have bags for a Colorado photo trip are two Domke F6, the Tamrac System 8, and the Lowepro bag for the Hasselblad. And then maybe one of the Think Tanks. For anywhere else, I bring much less.