I've been using Joomla quiz deluxe since about 2 years now and I must say that I'm very satisfied with the product.
I'm teacher in a technical school and searched for a way to help my students learn skills. Some of these skills are based on repetition, which obviously is not allways motivating...
Before joomla, I used another hostbased solution, but was not satisfied with the flexibility and efficiency of that solution. The more questions in my quizzes, the more painfull was the configuration of the quiz and their usage on a java based application. I was not very happy...
I started my own joomla project, checked the different joomla Quiz components, and opted for joomlaquiz deluxe
I imported all my questions from the preceeding system (was quite a work), but now both joomla backend and frontend are very fast.
Joomla quiz deluxe allows me to integrate different quizzes for mathematics learning. These quizzes are very flexible and easy to setup, with "randomization" of the questions and answer ordering.
The product has beeen very efficient for me as website's administrator, for many students to improve their skills in a fun way and for my colleagues, who can easily, check their own student's results, from the website, directly on their email.
The product's learning curve for the product is not to steep, considering the many options it provides. Ticket based help is efficent and quick, support from joomplace has allways been kindly, in translation, technical explanation and so on.
On line help was so so on the beginning, but now seems quite usable.
There are still a couple of features which I miss from my old system :
* printing a quiz as a written test, so I can use it in a classrom (we still have "dry" classrooms with no computers)
* using math formulas in quiz questions with randomly generated startvalues
I'll definitely stay with joomla quiz deluxe, expanding it's use for other learning fieds or subjects. The component is well worth the money!