Am delighted with this set. So far I had only ever single Allen key and mostly with short legs.
Hab both the greatest (10) and the nearly smallest (1,5er) used. And despite some use of force see the key continues to be made absolutely spotless. Also, the spherical head facilitates rapid screw enormous.
When grading the sizes you're (at least in the metric range) simply ensure that never again missing the correct key.
Should I have been buying much earlier, then many problems would have been none at all ;-)