Today I did my first advanced spreadsheet on LibreOffice after switching to Linux, and it handled itself pretty well. I had to search for some features on the web at first, but after I got it down, I felt comfortable using it. Also, LibreOffice’s default menu layout is not pretty, but I can find all of the functions with just a click, unlike MS Office’s ribbon menu where I had to click around to find what I was looking for. Sorry for bad English.
Ribbon bar shit, personally I hate the MS ribbon bar. So for me the LO interface is way better. Just depends on what you like and what you learned and know well.
and libreoffice still has a ribbon interface if you like that.