I'm a tracker novice but my insurance is £500 cheaper with tesco than with my current insurer. Whats the best tracker to go for and who do people recommend fitting it. I'd be grateful for the advice

I posted this question earlier.
Instead of working this afternoon I have searched the last 2 years on scoobynet for all the info on Trackers. Its too many people to thank but I think I know what I'm after now.