GraemeSmith
Your comment about not confusing the pros with teenagers is spot-on. Unfortunately these guys are likely to target your vehicle and even break in to your house to get keys. Or maybe they just pick your pocket or steal your bag when you're at the beach. The Lockdown system seems to use a dongle, and as Loz noted above, then the thieves could potentially just take that along with the keys and drive off.
We chose the Ghost system for our Cali because it needs a button press sequence plus keys to start the engine, which gave us a bigger feeling of security to most eventualities apart from physical coercion.
Having said that, good security is a layered thing, and all of the suggestions above are great contributors depending on the exact situation. (We couple the Ghost with a bright yellow steering lock, plus Safelocking the van and sometimes rotating the seats and then storing the keys well away from the front door....)
We chose the Ghost system for our Cali because it needs a button press sequence plus keys to start the engine, which gave us a bigger feeling of security to most eventualities apart from physical coercion.
Having said that, good security is a layered thing, and all of the suggestions above are great contributors depending on the exact situation. (We couple the Ghost with a bright yellow steering lock, plus Safelocking the van and sometimes rotating the seats and then storing the keys well away from the front door....)