Not at all displeased with my purchase. I really wasn't expecting a huge difference between this and my 2 year old whistler 1660 but D4MN.
I went in radio shack (small franchise store not a chain) and they had one hanging on the wall and they were whoring out the rat shack credit cards. So being the impulse buyer i am I went ahead and snagged it up after being approved for credit . I asked how long it had been there so I wouldn't get an old version and the girl said only a week or two.
Anyway, it saved my ass on the way home, I was going about 75 in a 70 and about 3/4 mi out I see a car; then BAM 7 signal strength Ka so i turn off cruise and reset it at 70 and cruise on by :-p I may not have been pulled over anyway but it sure felt good. KA range on my whistler wasn't that spectacular though it worked fine w/ a rabbit.
So yea add another very happy RX65 owner to the list
/edit: Just found out this is a 6.1 (on the startup screen while holding down city/bright and powering it on). Is this good? Also the 4 digits on the serial number car is 3106