but I doubt you will get the same quality anywhere at the moment.
I'm curious to know what metric you are using for quality. Does loudness = quality?
1) the SP30 will be less loud due to 80mm fans
2) the SP1 (and thus the sp30 presumably) is the most compact, high-tech device out there. It reeks of quality from the slim design to the ~1300W-capable PSU to the fact that it weighs almost half as much per GH as any other competitor right now due to the small heatsinks
3) the interface is a snap to use, and the ability to control the clockspeeds, amperage, and fan speed is fantastic
4) the per-chip clockrates and voltage are perfect. Bitfury blew me away when they could control chips seperately, but Spondoolies nailed it i think