I had accepted the notion that badger brushes were the best, followed by boar brushes, with synthetics bringing up the rear. I have a Parker silver tip badger, a Semogue owners club two band badger, and a Semogue owners club boar. The Semogues are great, the Parker is good (very floppy). The new Edwin Jagger XL might be my favorite brush. I use them all in rotation, but if I had to have only one it just might be the Edwin Jagger synthetic. I use mostly hard soaps and bowl lather, and have very hard water. It lathers great, and the handle is perfect for my rather large hands. Love the handle.