I can speak with experience.
I have electric cutouts on my '67 Camaro. The style you are listing has it share of sticking problems. Over time, You'll find you will find that you have to work them by hand while opening and shuting them repeatly with the button to un-stick them. The butterfly style just seems to build up carbon real bad. Sometimes only one side will open (or close) and you won't like the sound of that! If your going to get them, then spend the extra money and get the "DOUGS". They are built to last much longer. You will enjoy them much better than "any others out there", because they are built with a "Rack and pinion drive mechanism".
Be prepared for the price though!
This is a much better performing set. Follow the link below for a set of "Doug's 304 Stainless Steel Electric Exhaust Cutouts".
http://www.jegs.com/p/Doug%27s+Headers/759640/10002/-1