I've just got myself an IPad after spending years in the Android domain. I need an effective Office Suite for the IPad. I can accept compromises with 'doc' or 'ppt' but need the BEST 'xls' equivalent that is available.
(Naturally) I need editing, formulae, drop-down menu option etc. Would be delighted if I could make charts as well.
I am not expecting a free apps but one that works pretty effortlessly.