On the site of Broncolor you can compare the different lightshapers. This is a handy tool to see the effect of the modifiers of Visatec. Left and right you have the same submenu, so you can easily compare. With most modifiers they’ve put also the size of them, so  you can compare them with your own studiostrobes.http://www.visatec.com/visatec/tutorials/light-comparison/