anyone have one of these, the pros and cons and are they worth the price.

I have a redant box, it's not all it's cracked up to be, the colors look better, the jagginess is really bad, and I always have to increase my brightness of the monitor to even see anything, on the subject of reliability.... it doesn't work 100% of the time like it should, sometimes I have to reset the computer first, and the eye strain is worse from a vga box than with a tv.