it has a good amount of padding. its not the same stuff that you find in most other gig bags. the soft foam is thin, maybe 1/8" inch, you ahve soft fabric on top of that for touching your bass, then the harder panels underneath the foam, then some more layers as you go outward until you get to the nylon exterior. the entire wall is probably an inch thick at least, might be thicker. i dont have my gig bag on me right now, its in storage for teh week. on the bottom there is a big piece of dense foam that protects the entire bottom of the bass for the times you set the bag down on the bottom, which i do without worries. i never feel like my bass is bouncing around the bag, and the strap padding is nice and thick and wide, so its nice to carry around.
there is also a big chunk of solid foam that you can move around (velcro back) that supports your neck.
the stage 5 is apparently going under a redesign thats set to debut in a month or so. i saw the prototype images from access, and they look great. the design is more in the teardrop shape of the sadowsky and incase bags instead of teh traditional guitar shape. so i personally think it'll be an improvement.