sorry its been so long since i've replied to you guys.there is nothing inheritaly wrong with the clifford alarm system or any other system out there.i just have a preference to the meta as i have had no problems with this unit(fitted over a 250 units!!!).here in england the clifford was prone to false triggering from mobile phones(signal not screned enough)this was brought to our attenion by cliffofd uk.sorry if i have offend anybody out there. speak to later, erc.