Whole heartedly reccomend the Clifford 650mk2 with the Blackjax being installed too. Makes your car pretty much unstealable, even if they have your keys and alarm fob, the engine will just cut out for them. Absolutely awesome piece of kit. Also used Toad alarms & Scorpion, but the 650mk2 edges it for me. As for installers, the best in the business has to be Craig Stubbs, works independently but rated by clifford as their number 1 installer. His work truly is top notch. For info on them ring Chris at Chorley Car Audio on 01257 220035, they have a permanent contract with Amari Supercars and Middlehurst GTR and honestly all their work is at an unbelievably high standard. Complete audio, security and parking solutions. They've done plenty of work on my cars over the years, never been an issue. If anyone does ring, tell them that Greg told you to ring.