I have about ten pairs of scissors including a pair of Ernest Wright scissors but, like HenriettaMaria, find them very heavy. I use Kai scissors for most of my sewing as I can't get on with rotary cutters. My collection also includes tailoring shears, duckbillls, embroidery, buttonhole, pinking shears, and a very old pair of Singer scissors used only for paper cutting.
I too would recommend Prosharp for sharpening scissors and I've also bought scissors from them.