I usually use 10" Kai's and multiple Gingher's. I don't recommend Kai, being left handed I think it is utterly stupid I have to pay more for them and because I didn't purchase them direct (but from an authorized dealer) when I had a problem they refused to honor their own warranty. But if you order direct and want to deal with it, they are good scissors if there's no problem but the extra cost to punish me for being left handed and less then stellar customer service ran me off years ago.
I have my grandmother's Gingher's here that I use (although right handed), and I have a variety of them. Biggest issue is they are heavier then other brands, but they last and Gingher will honor any problem regardless of age and have their own sharpening service.
On Gingher, I have 8" dressmaker shears, 5" tailor points (which out of all of them, they are my favorite), 8" silk shears and a duckbill.
I have a Guggenheim and they're ok...cut as good as Kai, but the weight is off in my hand because they are lighter then Kai and much lighter then Gingher. Same with Korbond...both cut very well and are very light.
I have Gingher snips (I don't like them as well, but they look awesome so these are the ones I use with customers who have to see my tools) and actual work ones I use Wiss because I can get replacement blades and I'm cheap (although they work better then any other I've used).
My pattern paper cutter is from A Wright and Son, 10" wall paper trimmer.
Bar none, Ernest Wright is the best hands down. But you pay for it.