Shubb capos stay out of the the way of my left hand more than other brands (incl. the G 7). Another great feature is you can adjust the pressure for each individual fret. This helps the guitar stay in tune by avoiding over-pressure. These are the main reasons I choose Shubb. Nit-pick - the adjustment would be easier to turn if they used a larger knurl. This is a small matter of more comfort. On the plus-side I prefer the lighter weight and I like the colors of the Shubb Lite. Don't dismiss this older mechanism (no roller) - it's super smooth with no hitches. A great capo - I'm very happy with it.
GOOD SHUBB QUALITY - light weight, bought for electric guitars, where mass is less critical to sustain and tone. Works well. Still use regular Shubbs for acoustics.
These are the best of all of them, only reason I bought is because I lost my original, which I found later, but if you are doing a set-up these are great for checking the the relief.