Parking Sensor System recommendation

[TA123]

Could anyone recommend a decent rear parking sensors? Thanks a lot in advance.

[RichardSEL]

Maplins do rear-only audio with a LED distance display system for £30 (often on special offer at £20)
You may have to fit a "noise filter" too. This is because the rear brake lights are fed from a pulsed supply, not pure 12V DC

The cheepest I've found is a Veyron system that's on eBait for a tenner! I bought one just to get a transducer as my VW-supplied system ones are £32 each. Double that if you want body colour matched

[Quatrelle]

I fitted Meta Targa rear sensors. It's just a panel that fits behind the rear number plate, with a sensor either side. It works surprisingly well, picks up things easily on the rear quarters, no drilling involved, just connects to the reverse light wiring. Not cheap, but I'm lazy.