Dear Mister BitMan,
We need to know when to expect the S4

Absent news it's time to buy SP31s.
Dear Miasma,
We are waiting for testing results of the S4 sample machine. Hopefully there will be good news before next Tuesday.
Look forward to hearing it. I guess your competition is Hashra:
http://hashra.com/moonrakerwarp3/not really no.. Thats just 3x 1ths boxes.. if you read their description a moonrakerwarp3 = 3x moonraker boxes. So you'll spend 12u for 3ths.. thats been done for a long time.
"spend 12u for 3ths" Are you talking about rack units

I don't waste money on racks. I care about $ per gig and Watts per gig.