I have a Bel550 Euro.
Works effectively enough through that s**t patch on the screen. I have a few scratches in my screen atm though so might just lob a brick at it and get a new one without whatever crap they put on it.
It depends how you drive.
Radar detectors go off wherever there's radar (mine picks up automatic doors, motorway service shops and airport radar towers for example) so basically turn it off when you go into a town. Shouldn't be speeding in built up areas anyway.
If when you're on the M25 you tend to balance yourself on 100mph then they can be useful in telling which camera gantries are working or not, it's also fun when you're just following another car who keeps speeding when you flash and slow down for a camera, to see them get flashed by the overhead camera
They can be very annoying if you don't speed all the time, and if you want one to tell you where speed cameras are because you have no road awareness then I'd advise you get a GPS detector.
If you're like me and have no problem seeing cameras normally, and tend to be sensible (let someone else speed infront of you) on a motorway, then just get a laser jammer for the c***s you can't plan for
