I had my Q30s last me ~ 4 years (I even preordered them) until my headband came apart. I tried putty epoxy to fix them but there just wasn’t enough places for it to grab on to. I got replacement pads for them after about 3 years too. My battery was still good, so they would have lasted some more time before I gave up on them.
I got the space ones in November. The ear cups swivel to pack down and that seems to fix the weak spot I got on the Q30s, so I’m happy about that.
Just one note really, the Space Ones have a carrying bag, but if you have the Q30 case, they will fit in there.
So far so good!
Back with some pictures:
Detail of the new type of hinge. The hinge is one piece now
The way they fold/stack for storage