Wait or buy a 720? Currently using an iPad Mini and Foreflight in VFR conditions only.
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It's the glare off the iPad screen that is the real problem.
Get a Bodyguardz screen shield, it really works and leaves no finger prints.
I have both a 720 and an iPad runing iFly in the cockpit, and the 720 is WAY easier to read. I like having the redundancy, and either the pilot or the copilot can look up airport info, frequencies, etc. It is very handy to have both.