I guess I would be asking myself what was to gain in a change to begin with. I have been modifying my own pegs for a pretty long time. (we used to strip the cleats out the harvesters that was on the conveyors and trim the teeth, bend into a "U" and weld them on the stockers.) we literally built floor boards. Wider seemed better and wide was about 3/4" inch in the early 70's. The side gain to wider pegs was that you can improve your balance by placing the ball of one foot on the leading edge, and the ball of the other foot on the trailing edge. In other words, and like any of you that learned what was termed an "Athletic position" is easier achieved, your balance improves and your forearms in particular don't have to work as hard. If you have that in mind go buy what is widest to start with would be my advice and if it isn't the 15 dollar pegs then pass them up.
I guess I rode with the junk they sent back in what some people want to call "the day" that those pegs wouldn't scare me. If they scare you, DON'T use them. (Don't use anything else that scares you just because it is there, or takes your mind and confidence away either.)