As long as your key has the chip in it, I really don't believe in getting any other security system. They're not going to be able to start it without the key, so they would have to tow it away. If they're willing to do that, they're going to be able to steal mine. That's why I pay insurance. I have never had a vehicle stolen, so not going to put an alarm or anything else on.
Bought mine last Sunday. The first dealer I went to had some sort of GPS tracking device installed (starguard?). Said you don't have to pay a subscription fee and can track it on your phone. Would've bought that one, but they had over $5K worth of useless add ons installed and wouldn't remove them. So I bought mine somewhere else.
I live in CA and have a Jeep. Many Jeeps get stolen and end up in Mexico (about 2 hours away). People with Lojack and such have tracked their Jeep moving and the police still won't do anything, just watch it cross the border never to be seen again.
The dealer I bought from: The only add on they had was an alarm. Though I had the option to decline it and they disabled it. Alarms (even dealer installed) can cause problems. My wife's last two cars had dealer installed alarms and both were problems (electrical) that I won't get into.