Speaking for myself, the free trial will always win. If I've paid, that means they have my credit card number, and it can be hell getting some companies to stop charging. Of course, that means I only go with free trials that don't require a credit card number. I know why companies do the things they do, but I don't care, I'm not going to get sucked into a lengthy, multi-call game to get them to stop charging my credit card.