I use 1536x1200 1-1 on main and 384x300 with 768x600 for wow rez on small windows - so I have the same aspect ratio on all windows and all a factor of 1/2 or 2x in between and use all the space in my 1920x1200 screen - again the odd part is it works fine for most swaps and then suddenly enter a bad mode when swapping 5th and main

ps: Happy New Year to you all ! Best Wishes for 2009 !