I used Felcos for 35+ years. The 6 has a smaller arc and has a bit smaller "nose" that can get into smaller spots. I loved them for years and never thought you would be able to pry them out of my hands.. until I found ARS HP-VS7Z. It also has a smaller arc like the Felcos, but is sharper, and stays sharper. I can easily cut through a half inch branch with them. The feature I love is the "squeeze to open" function, rather than having to flip a lever.. Both the Felcos and ARS are around $50, but if you use pruners as much as I do, it pays to have well-made quality tools.
ARS also makes several models of long reach pruners. I've got an extendable one that goes from 3-6' that I've had for years. It's not as good as the professional models, which have fixed lengths, but being able to change the length while I'm up on a ladder is invaluable. They're also great for getting into the middle of a thorny rose to cut and grab a branch.
In the winter I prune an orchard of around 30 trees, over 60 roses, several Wisterias and a lot of other shrubs and climbers.. Cut back a lot of perennials, and do a lot of general maintenance the rest of the year. Either of these pruners are great workhorses, and the smaller size is less tiring.
