Not alot of online reviews other than the QVC reviews. JVC is a good reliable brand according to consumer reports.
The only 40" LED 1080p, 120 Hz I've found at a better price is a Westinghouse on Amazon.
http://www.amazon.com/Westinghouse-UW40T2BW-40-Inch-1080p-120HZ/dp/B009EOJKEU/ref=sr_1_2?s=tv&ie=UTF8&qid=1361275183&sr=1-2&keywords=tv+120hz+1080p
Despite the Westinghouse's positive reviews on Amazon other than difficulty mounting, consumer reports states Westinghouse as the brand with one of the highest failure rates.
Also Amazon has a Vizio with similar specs and its a smart TV for $499.
http://www.amazon.com/VIZIO-E420i-A1-42-inch-1080p-120Hz/dp/B009IBXECS/ref=sr_1_7?s=tv&ie=UTF8&qid=1361275183&sr=1-7&keywords=tv+120hz+1080p
New Egg as this tv for $550
http://www.newegg.com/Product/Product.aspx?Item=N82E16889209001
Whereas this woot deal isnt a huge price break, this is a very good tv for the cheapest you'll find it new online at this point.