I've had a Viper fitted to my VR by a friend. He has his own company which is handy. They are slightly more than the Toad but cheaper than Clifford. The Viper has loads of scope for add-one like remote start, etc. They also have the best looking remote of the lot, especially since Clifford changed theirs. Bottom line is you won't go wrong with any of the three makes. It'll all come down to cost really.