Lets see, you spend 3k on a tv but do not want to spend a few bucks to protect it? Add the cost of your receiver, blurays, game consoles and your system can easily exceed 10k. Mitsu warranty explicitly states does not cover power surges. Most extended warranty does cover power surges though.
Monster stuff maybe overpriced, but they do work. Like most better surge protector, the better ones also condition the power entering the tv. Each set of outlets have their own circuitry and are isolated from the other outlets to prevent interference. Also the better surge protectors guard against brown outs or under voltage which is just as bad as over voltage. The better surge protectors completely disconnect your system during an extreme voltage surge like a lightening strike. As an added convenience, they usually offer some sort of delayed sequential power up and down.
Open up those budget surge protectors and you will be amazed at whats is/is not inside. When I worked in electronics, you would be surprised on the number of units that fried during storms that were connected to those budge surge protectors...they do not work.
Also avoid computer surge protectors as their noise filters are not designed for audio and may even be detrimental.
For big screen tv, i usually would shy away from floor models. the 8 months on the floor can be equivalent to a life time of viewing. That is 12 hrs per day, 7 days per week. That is not the same for refurbs or customer returns that have limited time on them. For the right price i would jump on those.