Thank you all for your help and information it is most appreciated. Sorry for the late reply.
The reason why I am interested in using kloxo-mr is that it is compatible with centos 6 but I am willing to use it with centos 5 if it means that I can use less memory. Also I am interested in using the nginx proxy as I have read that nginx proxy setup is good for memory and cpu usage of static files. Most of my sites are static php/html files so it would be perfect for what I require.
I did not know there where tricks that could be used with kloxo to acheive cetain tasks. It would be great if these 'tricks' could be all put in a single forum post for reference?
Thanks all again for your advice it is very helpful. Now I just need to install kloxo and learn how to use it