Had the starter kit for a while now, I'd say they're handy to have and fun to play with but far from essential. They aren't really a replacement for lights but more of another tool in the box. And as Stephen mentioned they are amazing for flying up high and keeping the light down low.
They work best when used with powerful beam style lights like the PB70 and the smaller Dedo series with projector attachments. That helps stop the wastage/unwanted fill Stephen mentioned.
One thing I really like doing with them is tapping into an existing light source just to add some interest or punch. So you light the way you would normally but then dip the reflector into the source from a magic arm.
I went to a few workshops here in the UK which really helped me think about how I might use them on the smaller gigs I tend to do.
The guys at Reflectric are brilliant at using them and a great resource if you're thinking of working with the CRLS/Lightstream system.
https://www.instagram.com/reflectric_/
I'd love to see more finished examples of shots where people have used them. There's a tonne of BTS shots available but not much showing the final scenes.
