poor color, low contrast ratios and brightness.
That reads like all LCD's.
There's nothing wrong with Vizios for the bedroom. Personally, I wouldn't put any LCD (including the Bravia and Aquos) in as a home theater centerpiece. As far as failure rates go, I've seen plenty of Vizio's in restaurants around town. Those see a lot more hours than the average home system. One buddy had one. He returned it to Sam's since it popped and made noise. He just needed to take it out of "torch" mode. He bought a Philips (now that is one brand that has no business being associated with tier 1) instead. His Philips has good SD scaling, but has NO PC input (no DVI or VGA).
Back to Vizio. Hell, I would take a Vizio with the money saved to do a proper ISF calibration and one (or both) high definition optical player(s) vs. an expensive, prone to banding Sharp in left torch mode for the bedroom.
Sceptre's appear to be crap. Westinghouse's are hit and miss. I have a refurb in my bedroom. It has quirks, but it works and serves its purpose. Emprex? No reviews anywhere. Ilo? Polaroid? Blech. Insignia? Blech.
Out of the cheap brands, I prefer Olevia. However, ain't nothing wrong with Vizio.