I'll be honest I've run both OpenOffice and Libre Office and I'm not impressed with their speed/resource consumption both of them lag on my laptop and I don't think it's because of my hardware, for example Kile a Latex development environment based on Kate runs better although it's doing, I think more stuff in the background.

So is there another office suite/ word processor for a Kubuntu 12.10 installation, going with Kate seems too low end while doing everything in Kile is bringing in the big guns to early.

I am mainly interested in speed and of course saving in a reasonably used format, not in having a lot of bells and whistles.