It's my go to system , especially since they now have a stubby 6 in 1 ( same bits ) . I also use a Snap On magnetic 1/4" hex system - but mainly for the more out there systems , and non standard lengths .
I may eventually try more Wera stuff , they have one of the neatest bit ratchets I've ever seen . Not to mention some really nice bits .
I carry a De Walt 6in1 power combo bit in my pocket - the bits and sleves are interchangeable with the Kline , at the end of the day , I have a very low bulk , and powerfull system .
Chris