Am just about to reload my windows 10, and make a clean start on a SSD,have been using ms office 2007,but reading how bad it is to use outdated software may look for an alternative.I only ever work on doc or spreadsheets on my PC,never send or open received unless from a trusted source,therefore is it safe to continue with what i know and like. What alternative is best, have looked at libre office 7,but not sure i like the layout,maybe i could get used to it,or is something else a better match,libre office seems to get most mentions in the posts i read.Most of my work is in spreadsheets rather than word,and what am i likely to lose if i save a xlsx as a odf.