I have had an RK2 for about a year now and I find it a very useful piece of equipment. The temp control is ideal as it allows my basic fans to know when to turn on and off. Also, the light timer is great as it is very accurate and will turn the main lights off if it is too hot in the tank which occurs quite often in the summer. Feeding is easy, push a button and all equipment that you select (i.e. pumps, powerheads, skimmers) will turn off for a pre-selected amount of time.....good for water changes too. If you really have your heart set on the RK2, I would look for a used one as the RK Elite is set to be released @ $500. Many people who have the RK2 will potentially be upgrading. Otherwise, the RKE would be the rout to go if you had the $$$.