In my mind it is a fair comparison (maybe) between the Sicce and the Vectras. Then a comparison between abyzz and royal exclusiv (on price alone).
The SDC 9.0 boasts impressive gph at high head heights, but I can't find much about them yet. I wonder if it truly produces around 1800 gph at around 10 feet of head loss?
Is the discussion here on R2R? I appreciate it!
I added the link in my previous post and the comparison between the SDC and the Vectra are in there as well. I'm not sure on the head loss but I sincerely doubt at 10 Ft it does, a good question to ask in that thread though.