I've never seen the Viewsonic, but I have the Westinghouse LVM-42W2 and it's a great TV. I got lucky and bought it at Best Buy for $1499 on sale about 4 months ago during a 12 hour sale they were having. Have you visually looked at each of them in person? I would do that if I were you, that's a lot of money on a blind choice. If you do, make sure to factor in the cables they're connected with and bring your own video material to even the playing fields on both. Also factor in the inputs on both as to what you need now and what you'll possibly need in the future before you upgrade again. Good luck.