The SP30s are supposed to be quieter than the SP10s... how much quieter I'm not sure.
You can't trust marketing, no use speculating until they are in the wild. They said SP10 wasn't too bad either ...
Different fans and PSUs rated at lower dB I believe. That is the thinking. If you don't have a segregated space your wife is going to kill you having this thing ramped up in the living anyhow. Like the rest of the world Datacenter it.
Also any news on price being dropped again?
I will be in HK for the conference OP. It would be great to meet up if you are going.