I ran into serious problems with Numbers (it just wasn't good with them, and broke some of my existing spreadsheets...), and I didn't like Pages because it makes it a serious pain to work with or save into MS .docx or rtf, or anything other than pages format. I found Libre Office to be waaaay closer to the office suite of tools I was looking for on my MBP. (and less buggy, believe it or not).