I have a RKL expanded to its max capabilities. 2 pc4, sl2,net. If you get the net module they have an android app and an iphone app for it. I hear the iphone app is in progress for new features but android supports outlet control and graphing. I also have their myreef control software on a laptop that is always connected to the system via vnc/remote desktop so i can modify anything anywhere.
As for Customer Support. The forums are pretty decent. Usually someone has already run into the problem and or knows how to fix. Their email support is ok. I have had to contact them several times and they will usually respond within a day. I believe their support has gotten better recently. From the horror stories i have heard they must have improved staffing within the year to handle flow of people.
Product quality wise its ok not great. I have had 1 RMA item so far and a few items that have needed to be re-flashed due to firmware issues over time. I have no comparison with neptune products but from word of mouth i would assume they have a bit higher quality.
Bottom Line for me. If you cant afford to spend $500 in one wack the Digital Aquatics is a decent options as can buy things as you need them. In the end i think i spent more buying components individually but my pocket is tricked into feeling better.
Neptune From what i researched is a better package. They have been around longer and have a better communication/web/control system in place. If i could have afforded to buy all in one wack i would have probably went through an apex elite.
