Go to Tire Rack.
http://www.tirerack.com/
Click on "tires by size" (lower left corner)
Enter 245/50-16
You will get a list of 36 different tires that Tire Rack carries in that size. Tire ack does not have Nitto, which is a popular brand. The prices range from $68 (Sumitomo) to $211 (Goodyear). They range from "all season" to "ultra high performance summer".
For a tire that interests you, click on "survey results". That will give you a numerical rating, based on user feedback, for things like dry traction, wet traction, treadwear, noise, comfort, etc. While you are in this screen, you can click on "Compare this tire to other......" and you will get a list of all the tires in that category, rated from top to bottom overall.
Not an "absolute" evaluation of the tires, but they also include test results and reviews for many tires.