The best replacement for MS Office?

Hello, I trying to perform 100% percent of my work without using any MS tools or products. I am successful with the exception of being able to open/save MS apps. I currently use SuSE 7.3 + KOffice. Personally, I like KOffice, but the file filters are not the best, at least in my experience. I have not used StarOffice in sometime -- is this a better option? I have tried OpenOffice beta -- however, the installer locked two of my SuSE boxes, so this does not seem like a good choice for office use. Thanks, Dominic --- [This E-mail scanned for viruses by Declude Virus]