As one of the other guys said, everyone will have an opinion... I have had Onstar since '04 and I CANNOT be without it, or rather I won't be without it, here in Canada where I live is in the mountains, and the cell service SUCKS in the mountains in a LOT of places... it is getting marginally better, and here in BC if no cell tower is readily near by, you may as well send a smoke signal... I was told back in the day, and I know it has changed , but a cell phone worked on a 3 meter band and Onstar was a 15 meter.... I have luckily never had to use it for myself, but I certainly have for others, who have found themselves in a pickle.... to me in my small world, it is peace of mind to know if I do end up off the road and unable to function I know Onstar will be there to help find me, and for the cell phone, mine usually has the battery just about ready to die, and for a few bucks, which is a LOT cheaper than a cell phone, it's well worth it to me, and the Onstar phone works just fine, for me at least, and that is in the mountains, it costs me 6 cents a minute to call anywhere in North America, All of Canada, USA, Mexico and Alaska included, so for ME, I will buy in...it's only a few bucks a month and you can up grade a month at a time if you decide to go on a long trip and need all the extras...... thanks for allowing me to put my story to this thread.... to my wife and i, it is well worth it.
Jeff