Not to drag out comparisons on the smaller apps - but linux has always dissappointed me with GUI text editors - yes I use kate on a daily basis, but even on this <smug> Dual 2GHz Operton with more ram than is polite to mention</smug> machine I have at work, it doesn't feel anywhere near as responsive as StrongEd, and really crawls when a largish (2+Mb) is thrown at it - I tend to always find responsiveness preferable over features (which granted isn't for everyone).
On the TW/LaTex front - again I was thinking in terms of putting together documents quickly and easily, more along the lines of 80-100 page undergrad dissertation (inc 200+ equations/inline tech comments) - rather than full blown professional theses - last time I knocked out such a doc took a little over 2 days and was actually fun to type up - imho considerably faster than I could have done it just in LaTex (but those comparisons are a little subjective I suppose).
Anyway suppose I should be getting back to work - interesting discussion this thread btw - fwiw I feel a lot of these apps we're discussing would have a real chance if native Linux versions were made available.
PS. in reply to Simo last time I checked XaraLX was starting to shape up quiet nicely, although oddly one can use most of the tools only if you open an existing document first - rather than just on a new blank page. (www.xaraxtreme.org)