[lmz]

I also used it to typeset a project report which had some msword specific formatting rules. I found it more customizable than LaTeX in that regard, but I did have to read the docs a lot more.

[0xmohit]

I particularly like the fact that you can control floats much better than in LaTex/pdfTeX, but I agree that the community is smaller.

It appears that there is no development in ConTeXt for a while now. I haven't checked it, but it seems that they are working on LuaMetaTeX.

http://www.pragma-ade.com/luametatex-1.htm