I would agree with the last one.
A channel break in a lake does not usually exist unless it is a naturally dammed lake, reservoir, or there are dredged passes. Usually a channel break is associated with a reservoir. The channel break is the drop into the old flooded creek bed. It does not need to be a bend or anything exciting, but for fishing, usually you try to find the channel break along with a bend, point, creek mouth. Multiple different structures in one location are usually better to concentrate fish than one continuous type. Add cover to the multiple structures and you have a good spot.
My two cents. Take it or leave it
Jim