I already got mine
Having said that I think they are a good choice. They push a lot of water fine through a BIX, TDX and a Maze4 GPU, and they are inaudable outside of about 1 foot (30cm). Ability to run them in series or paralell makes them very versital as well. Like my own system I have in the works, it can be easily configured for a dual loop or a single loop.