Recommend a good 7.5 LCD car screen

I’m looking for an lcd screen for my car. I bought a $100 lcd off ebay and its looks blurry and washed out colors. Can anyone recommend a brand and model number they are happy with? What should I be looking for (specs)?

I went to the electronic stores and none of there lcd screen were unplugged in and readings ads on the web its have to decipher since everyone claims theirs is the best.

Thanks,
Jim
Starbuck@gate.net