the 160xv and 160xvl are just a remote start/keyless unit. Sorry dude no security options are available for these units.
771xv is the lowest one you can get it that has remote start/security/keyless. I would reccomend the 791xv though, if you are going to switch out anytime soon. The 5900 is a good one also. I have had both the 5900 and 791xv on my car, and the 791xv is the one on my car now. The only difference between the 2 is the 5900 has a 2 sec delay on the unlock/unarm and the 791xv is instant unlock/unarm.