not to intrude on your club forum - but a few things that makes the Jr different from the RK2 (I say different, as, personally I like these additional user options given by the Jr - , but others may like to keep things more simple)
The sunrise/sunset times can be set to mimic the actual times of sunrise/sunset of the reefs in say, the solomon islands - so it will change daily throughout the year.
It also includes a special moonlight function for use w/ a incandescent light bulb - it supplies the bulb with variying wattages to directly mimic moon cycles.
I also appreciate the open-ended programming language offered- this may be an option that makes some wary of the Jr, as it is not as user-friendly, but it does mean that you can do just about anything you would like when it comes to timeing, temperature, pH controlling (any reading can function to control another - not necessarily bad or good; I only like to monitor to keep things as simple as possible, but the controlling ability is possible)
And just one added note - you won't need a dedicated computer, the Jr stores information, so if/when you want to retrieve it, you can use your laptop computer (another user preference depending on if you have a laptop)
I'll escourt myself back to the midwest now
