I was specialized in PHP based CMS technologies like DRUPAL, JOOMLA, ZENCART, OSCOMMERCE, WORDPRESS and CRE LOADED etc..
I have 5+ years of exp. with DRUPAL web development and developed almost all kinds of Plus
I have made a previous site in drupal 6. It's a ballet website running on a subfolder on my a hostgator server. Drupal 7 is nice but unstable. However I can debug any issue manually in Drupal 7