I don't mind dongles, but I don't like Pace. One of the reasons is right below...
bapuZDT for $30 a year compared to the cost of all the plugs that I own (that require iLok) is pittance.
I realize to some, it may not be pittance (lower plug to ZDT ratio) and I respect that.
While true, it's also a service that should be free of cost considering how much they are charging companies for their service to begin with. When a dongle fails for whatever reason, it's usually the company that makes the samples that end up getting the bad reputation which is not good for business (look how many people refuse to use EW products just because of iLok). Plus, I've heard nothing but nightmarish stories of people who do use Zero Downtime if something happened to their iLok. It seems it's more of a pain in the ass than it's worth.
The way Propellerhead handles the dongle for Reason is one of the only good things they have done in the past few years. More companies need to adopt it.