I still find the Magnetic Lasso in Photoshop Elements to be my selection tool of choice at times. There are times when the newer semi-automatic selection tools don’t work as well for me. Recently I learned that if I used it with Caps-Lock turned on, the cursor becomes a circular brush with a + sign in the center. Zoom in sufficiently to see this symbol, and it is much easier to trace along the edges of your selection. Try it. It really does improve your tracing accuracy. This also works in Photoshop.