I'd say it's too early to tell. The original PS Jailbreak team announced an update that will work on the new firmware that blocks all exploits. And they announced a new improved backup manager. Also they said both will only work with their dongle and none of the other methods.
We have to wait and see if the updates are real, and if they really can't be used on all other devices, which i doubt. I would bet my money on free programmers that will release free tools that will work better than those commercial things. Everything those dongles do is to allow to run certain software. So these dongles can't have any advantages over free solutions, they can only try to lock their software to their hardware. And that won't be of any interest if the best software is available for free by design.
If the update is a fake or can be copied, i strongly recommend to use one of the free methods with that programmable board or a mobile phone, as the result won't differ. All those single purpose sticks, only have that one purpose, and are way more expensive.