I recently purchased two of these K&M overhead stands for my small commercial recording studio. These stands were really a game changer for me.
The main areas which they have improved my workflow - stringed instruments, drums overheads, vocals.
With strings, I can now set up any mic (regardless of weight and size) without getting in the way of the player or their score. This used to be an issue and I would have to workaround it by either moving/changing the mic, or get the player to setup differently - which isn't ideal for them.
Drum overheads now go exactly where you need - they take a little longer to setup than before, but placement is totally worth it in my book.
Vocals just look pro in pictures/videos. Vocalists are often impressed when they enter the booth and the mic stand doesn't look like one they use on stage. :p
All in all, if you have the space, these are a great buy.