I've always cited the PC as my preferred option over regular plugins because apart from sounding great, there's no need to have a million FX UI open at one time. Now I can use plugins much the same. Click on one and its UI opens, click on another and its UI opens and replaces the previous one, repeat ad nauseam.
I love it. Of course the option is there to open and not replace if you prefer. The little things make the big difference to me. YMMV of course.