Since few people are really good at telling what size socket is needed, this reduces fuss and stuff works in most cases, given that wrenches are often singles. Not quite enough torque for some applications, but if you put stuff back together right everything should be doable with this triple set.
Not perfect for every job, but adequate for most. I hate the idea of multi-tools, but this is one of the few tools I swear by in my kit. The ball and flat ends are both good options, ball often better for odd fits.
As someone who removed nearly a hundred rusted chains this year, I would highly recommend some spares for when a chain is stubborn or your grip isn't quite right. Easy to replace with vice grips, though a small wrench fitting of some sort would be nice.
These are great in most cases, and will take off most bottom brackets with ease. I know someone well who has stripped a bottom bracket with this, but that one required machining for removal, so I'd say any ordinary bottom bracket can be removed. Great for adjusting spacing, screwing around with different crank lengths and chainring combos, and making new friends.