I think I have written a speeding ticket to every brand radar unit in the US, and I don't run LASER that much because I don't like sitting stationary waiting for a car to come to me. That being said, back in the day, I went through a couple of Bells and really liked them. I don't think I ever got stopped with one. The one time I borrowed someone's Whistler, it went off twice and I got stopped twice. Buy what you can afford and use it accordingly. Don't spend any money on jammers or signal scramblers, because they are a gimick and do not work against quality equipment.
I agree HotRodZilla. I run both radar and lidar and have written plenty with "radar/laser" detectors. Radar detectors work great if there are several other cars nearby to "tip" your detector off. Lidar (laser) can be detected, but by the time you throw out the anchor, your speed is already on the lidar unit. Cops can single out each target with the lidar, but not with the radar. I wouldn't spend the money because they are a waste of money. Same thing with radar. If it's just you on the open road, you're screwed. When your radar detector goes off, the cop already has your speed on the radar unit. Some states require the officer to "lock" your speed on their radar unit. If you can dynomite the brakes fast enough and catch the officer napping, then you might catch a break. If you think you've avoided tickets by having a detector, it was probably the cop ignoring your speed on their way to a call or you weren't going fast enough for them to put in the effort. Listen to Zilla and I, if you're on the open road and with little other traffic, stay within 10 mph of the posted limit or check all the over pass areas and medians as best you can and good luck. I've just been lucky because I know where to look ahead of time. Best advice is to keep your eyes open and don't get tunnel vision when traveling at 110 mph.