I've yet to see any Vizio considered for their high accolade for build quality in the AV enthusiasts community. If you step away from places such as Consumer Reports and more price-driven reviews, you would pick other brands. Samsung 8000 series is one example of a better quality LED in the 60" size. Unfortunately we have all had to learn this way dealing with one type of faulty product or another (not just HDTVs) ;(.
You would get even more bang for your buck by looking at plasma right now, IMO. Some excellent quality Panasonic models for a little less $ than you would pay for the same sized LED. Just make sure you have good room darkening capabilities, although in the average room/viewing space you would do fine vs older plasma models.
I bought the Vizio 60" LED in December and a month later had to return it due to no picture. Replacement is now 3 months old and the television will lose its picture and will turn it self off at lease once a day. I've seen nothing but rave reviews and I didn't know if anyone has bad similar experience or if I should plan on replacing this one before the warranty is expired.