I use them frequently and have for years. The majority of what I use are soft hackles. Some of my favorites are Partridge & Orange, Partridge & Yellow, Starling & Purple, Soft Hackle Pheasant Tail, and Soft Hackle Hare's Ear. Some of the classic winged wet flies I like are the March Brown, Wickham's Fancy, and Leadwing Coachman. I also like to use flymphs as emergers for some of the more prolific hatches of mayflies like BWO, Sulphurs, and Light Cahills. These type of flies are most effective during the times of year that the insects they are meant to imitate are hatching.
"Have no fear of perfection - you'll never reach it."