Which radar should I buy?

Which radar should I purchase that can be both a handheld or dash mounted radar that is in the $300-$500 range? Secondly, what is the best place to purchase this radar? I was interested in the MPH Speedgun but saw that a new one can go for $895. Any suggestions? By the way the radar doesn't have to be new, refurbished would be just fine with certification. Any help would be appreciated.

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Hippo Adventure (http://playgoogle.ws/igry-dlya-android/1300-hippo-adventure.html)
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Hockey Nations 2011 (http://playgoogle.ws/igry-dlya-android/1346-hockey-nations-2011.html)
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Hogworld: Gnart's Adventure (http://playgoogle.ws/igry-dlya-android/1500-hogworld-gnart-s-adventure.html)
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