I have no idea what kind of software I'll put on the iPad because I've waited on buying an iPod Touch and I have no use for an iPhone. So I don't know much of what's out there.
My son lent me his iPod Touch to watch a movie. Ten minutes in, my eyes were filled with tears from the strain so I gave up on it till a bigger screen comes along. The iPhone? I get less than 5 minutes a month of call time so the monthly expense is not worth it. But the iPad, that I will get.
I might put a cad drawing ap or some other vector driven drawing ap. I'll see when I get the iPad.