I recently purchased a new Apple TimeCapsule. I am a huge fan of Apple routers and how they work great with Apple and other network devices. The new device has been working well, but I did notice that my iPhone and iPad would not see all AirPlay devices at times. The only resolution was to turn Wifi off and back on again. This would be a temporary fix. Others in my family confirmed the same issue. :(
In the never ending goal to make sure I can restore and keep up with my systems' apps and configurations, I started a github repo this year to list them. The hardest thing about this is to make sure I update the repo as soon as I make a change. As long as I do this, I am set.
I think the iPad is a luxury. May be a luxary that I desire, but I am more interested in upgrading our iPhones this year before purchasing one. Since I can only afford so much at one time, I may be able to hold out for v2.
If I were to purchase an iPad, I would probably go with wifi only. I have an iPhone and most places I would use this i would have wifi.
Possible use cases for me:
With keyboard, good note taking device for meetings, conferences, etc. Think netbook type device. I do all of my notes electronic and with Evernote so I think it fits well for this use.