lol... yea, I actually spent a lot of time last night trying to compare the 2 systems, both from a functional standpoint and in terms of cost.
There's a lot of info about what the systems/modules do, but I had a hard time figuring out how to best build a system for me. I definitely want the System Lab 2 to monitor pH, salinity and temp, but can that module be added onto the RKL, or is only the RKE customizable/expandable?
Have you decided about the plumbing through the wall with remote sump? Personally I think thats the way to go. If you are keeping it on that same wall it would be simple to do.