Hi bearcat,
I have air nav pro which is cheaper sat nav which works perfectly. Also gives you vor adf etc etc but to be honest i have not tried it. Update now gives notams on it too although not tried it im guessing you will need an internet connection up there ie 3g version ipad
I have the ipad kneeboard which has a half screen size "note pad" bit so you can make notes of squawks etc it just folds over the bottom half of screen on a sort of hinge.
I also have pilot wizz pro which give notams can do w & b and all calculations (have that on phone and ipad 2.
Hope this all helps.
Lots of people recommend sky demon but for me to keep costs down im happy using air nav pro