Jaadu vs. Logmein

[smythcc]

I'm looking at buying a remote desktop client for my iPod, and I've basically narrowed it down to two options: Jaadu and Logmein Ignition. I've read up a bit on both apps and they each seem to have their own advantages. I'd primarily use it for my own desktop at home (a Windows 7 machine), but I would also use it to do some basic troubleshooting for my grandparents desktop, which runs XP. My question is how much of a difference is there between the two clients with respect to difficulty of setup as well as security? I'm not opposed to setting up a VNC client on either machine, although my grandparents machine is run straight to a cable modem, so I'm not sure how this would affect setup.