I have a 795 and get very good results.
at
www.radartest.com they called it the best detector under $99.
They tested it to have 28,000 foot range on X and K bands and 27,560 ft on Ka.
The only negative reports I hear are from people who only sell the expensive detectors.
I am an actual electronics tech and since I am not trying to sell you something I just tell it like it is.