1) org-mode makes a good spreadsheet
2) Not being Android user myself, I have only heard good things about Orgzly from Emacs people around. What features exactly are you missing?
3) you can use any keys you want with Emacs. I have my own setup that I am using along with the Vim key bindings/text objects.
4) pretty much everything else works well with fonts and colors; tables yeah, tend to keep simple formatting.
Emacs is not ideal. But it is the most flexible and configurable piece of software in the world - and org-mode is the best outliner ever created.
Thanks, I hope this will be useful for other people!
1) When I google for some advanced operations (like multi-column sort), the advice seemed to be export as CSV and do it in openoffice.
2) While orgzly is a good attempt, if you google around you will find lots of limitations (it's too long since I've used it), as it is a reimplementation of org-mode so can't hope to be feature complete.
Emacs is not ideal. But it is the most flexible and configurable piece of software in the world - and org-mode is the best outliner ever created.