I have these and am actually considering selling them. The only pro is the space saving design. The major cons are that they are bulky, long, and the handle is too big. I am pretty small at only 5' tall and have really small hands. If you are taller and have larger hands you might not have the same issues I have. Also, they are not really meant for exercises in which you hold the dumbbell on the sides rather than on the handle (like pullovers). I had problems were when I tried this the dials moved and then the weights fell off the handle.
Hope that helps.