This is what they say about the X50, "Overall performance of the X50 is nothing like the current Escort 8500. Less Ka camera performance, compared to the earlier Escort 8500." Their testing puts the V1 as #1 in all tests and the X50 as #2
Looks like the V1 beats the 8500 at this site
These are really good tests so read all the information. V1 gets 5 stars and the 8500 get 3.5 stars on this site
Most of the high performance car sites have discussions about this issue all the time and the V1 is picked at least 8/10 times as #1.
To those of you with the X50, Radar Roy says to just "slow down until it stops beeping" and I say to those of you with the V1, "speed up once you know which direction the radar is coming from or going to." [replacer_img]