After our first experience with the Kai professional line, we replaced ALL of our aging sewing scissors with KaI, with a few exceptions (e.g., Gingher thread nippers). Over 20 pairs in all, including a few duplicates, plus we bought a few of their consumer line as well, which are also very good. But the Kai professionals are AMAZING scissors. I think the 12” would be of more limited interest to many home sewers, but if you cut a lot of mid to heavy-weight materials - say for window treatments or upholstery - there are few better options, short of an industrial cutting machine (think Eastman 629). While we like the Chickadee-type electric rotary shears for some fabrics, they can be fussy when you are dealing with a variety of fabric types. Manual rotary cutters are great, but will never replace good shears in a lot of applications.
Kai Professional ... VERY highly recommended. (I have no relationship with Kai of any kind.)
Kai Professional ... VERY highly recommended. (I have no relationship with Kai of any kind.)