Good Looks, Poor Performance, Horrible Support

Purchased this ViewSonic G90fb 19" CRT based on other reviews. Much to my surprise the unit I received does not perform as expected. Monitor brightness varies depending on the windows that are open on the screen - when there is a large white window open (i.e. My Computer) the screen darkens and shrinks about 1 mm on all sides. When the white window is resized or minimized, the whole screen visibly lightens and expands. I can accept the fact that maybe this unit is defective, but the ViewSonic customer support is virtually non-existent: after trying for one week I have no response to 5 separate emails, the telephone support is inevitably 'busy assisting other customers' and 'experiencing high volume'. Based on my personal experience, I would strongly advise anybody against doing business with ViewSonic.