Maybe you need to learn more about this tech, before you waste more of your money or pop off at the mouth. A 42 inch screen is no good for 1080p, when sitting at a normal viewing distance. I have seen proper setups for 1080p including projection systems with screens some 20 feet across. These are amazing- even 1080i video feed of a football game upscaled to 1080p on this setup was like you were there on the field, when sitting 20 feet back. A 42inch screen at 1080p at 10 feet is a yawn fest. Plus as I say, I only have 1080i.
Take a look at the chart at this site and read the article- it is the same you can read anywhere, but this is a good site. This comparison is with a 50 inch screen which doesn’t sound like a big difference from 42- but it is. I would say 50 inch is the bare minimum for 1080p for max enjoyment, and 60 inch is preferrable at 12 - 14 feet:
“What the chart shows is that, for a 50-inch screen, the benefits of 720p vs. 480p start to become apparent at viewing distances closer than 14.6 feet and become fully apparent at 9.8 feet. For the same screen size, the benefits of 1080p vs. 720p start to become apparent when closer than 9.8 feet and become full apparent at 6.5 feet. In my opinion, 6.5 feet is closer than most people will sit to their 50” plasma TV (even through the THX recommended viewing distance for a 50" screen is 5.6 ft). So, most consumers will not be able to see the full benefit of their 1080p TV."