I had a Callaway bag years ago, so did a mate. Both poorly made, fell apart fairly quickly and returned, replacements also fell apart. Would never buy a Callaway bag again.
I've got a Big Max bag at the moment. It's fairly new so too early to comment on effectiveness and durability, but initial impression is the build quality is good. More relevant - I've never heard anyone complain about Big Max bags, everyone seems to love them. Bit like Audi, they are not cheap but understated German engineering often ends up as value for money!