I'll tell you why I may seem negitive, everyone thinks they are an expert.. my mate said, I've been told. They then give poor advice. Poor advice really annoys me, it my pet hate.
He implied there was only a obd port lock in the article, that was untrue. People may have seen that and not bothered to read it. putting their car at risk. People are putting their faith in things that a thief laughs at.
If you see a doctor and he says you need surgery, then your mate says noooo eat ginger root. It's the same thing, these security products were attack tested. One was attacked for ten hours and still held firm, compare that to three minutes disk lock.
As for a small % my 993 was cloned, they used my plate and put it on stolen cars. They sold that car four times, getting retail price each time. Even if they get £5k it's more then the average bank raid for far less risk.
It makes no deference to me what so ever what anyone does to secure their cars. I just hate the thought of another one being taken needlessly. It's easy to look back and say I wish. As for insurance yes your insured but it will go up next year more the the cost of the unit to stop it being stolen.
Read it, don't read it. Buy them, don't buy them. It's your call but the information is there.