Thanx for all of the responses. I'm currently on my laptop with Sonar and my Izotope 2 takes up a third of the screen, not good. And when I add BREVERB2, almost all of the screen is taken up by just 2 plugins. Hopefully plugin makers will start including resizing options.
My best desk-top solution so far is to reduce the size of my console on the 2nd monitor to about a fourth of the screen and then float the plugins around the screen. This method allows all of the the plugins to stay open simultaneously. I'll try devising and saving various screensets as that seems like another good alternative.