However after I left the company, we changed the design and did a complete rewrite (switched from PHP/Kohana to Python/Django). Now it is up and running for a few months and growing slowly but steadily.
Would you mind if I ask why you switched?
BTW, nice design on your home page.
Kohana was slowly dying at the time and the development had almost stopped (currently the framework is completely dead). But really I just wanted to try a new stack and Django looked promising. Also had prior Python experience.
In the next project [0] we went from Python/Django to Scala/Play :)
[0] - http://datazenit.com/
Good luck with both!
And your are right about the right tool for the right task. Datazenit naturally evolved into what it is now. Customer feedback and feature requests initiated the switch to Scala.
Thanks!