Ravelco is pretty impressive and a price tag to go along.
will the thieves learn to bypass it soon? your guess is .....
maybe i'm old fashion, but if you look at page #6 of the link,
"Time Delay Switch", you will see my favorite. i dont even bother
with the key portion as i used a toggle switch, well hidden but accesible.
delay switch lets engine run for less than one minute and then powers it down.
enough to pull out of the parking slot and stall in a prominent spot.
of TWO attempts on my cars, driven maybe a block away and cars stalled
in the middle of street. cars abandoned by the thiefs.
both times "Time delay switch" worked.
5 years ago, i had another attempt on a car with state-of-the-art alarm,
car gone, found in Mexico stripped. i hadnt bother to put in a delay switch
cuz of the high tech alarms. so much for that.
etching the vehicle VIN on the wheels (and glass) may also be a good idea,
since no alarm or theft device will stop a thief from using a jack and a bottle
of liquid nitrogen to freeze and break off the wheel locks with a peenball hammer.
make sure there is a label that advices the VIN is etched on the wheels to deter
any attempts - if the thief stops to read.
http://www.ci.minneapolis.mn.us/police/crime-prevention/docs/PrevAutoTheft.pdf