As a quick followup to my Post#7 above, I've read about five decent threads on various Nat'l forums, comparing Neptune Apex (full blown version) vs. Reef Keeper Elite, trying to stick with 2012 threads and ignore the 2011 and prior. After a lot of arguing with my wallet, I've decided to go with the full-blown Apex and not worry about any roadblocks down the road. But BOTH are awesome. Unfortunately probably the most expensive option, but includes more features out of the gate.
I like that the Apex might have a little higher quality and track record for stability and hardware issues, better overall cust.support and RMA/warranty support, has a factory-supported Android app (not 3rd party or beta), excellent PC-interface software w/ alarming, nice web server, can wirelessly control my Vortech MP's, good graphing/charting for trends, moonlight/lunar cycle control, UPS control, and customizability out the wazoo for more technical people to program. Also a good starter manual available online, vs. the RK forums.
Feel free to post up any thoughts that the RKE will do all that and just as good, they've fixed any customer support / warranty issues?, etc...