If it is in your budget to upgrade to a nicer unit, then that would make some sense.
Some of Viewsonic's stuff is just... well, cheap. Especially on the A/V side of things. Their LCD panels have a pretty solid reputation, but their A/V stuff that I have seen has really not even touched 'high-end' in most ways.
Things that are worth noting:
1. The LCD you have is not 16:9 so when viewing native 16:9 material like the X-Box 360, PS3, and HDTV will produce, you won't get the same screen filling impact that you would if the screen was 16:9.
2. The LCD is just a pretty low resolution display. Regular VGA. I wouldn't think you would have major issues if it was at least 16:9, but it is both 4:3 & low resolution which means that it is really designed for just watching 4:3 material off your cable box or VCR - not critical viewing - and not HD viewing or gaming.
3. The price is the main good point and the N2750 from Viewsonic gives you a few more inches - but lists at $1,000 on their website. It has a 1280x720 resolution which is excellent for 720p HD viewing and should do a very good job scaling 480i, 480p, and 1080i to fit the 1280x720 matrix. There are obviously other offerrings that may fit your budget more.
Bottom line is that if I were going to pick one, and only one reason to return it, it would be because it is not a 16:9 display. If it was an 16:9 EDTV with 853x480 pixels then, while HD material would all have to be scaled to 480p to fit the display, it would still look VERY good and be native widescreen. Now though - it really has to mess with any HD image to make it fit into the 4:3 aspect.
Your money to spend of course.
