I've got a couple S1s hashing away and have been looking to up my game to the TH/s club as well. I can get the S2, but I've also been looking at the SP-10. Of course, I could pick up 2 S2 for the price of the SP-10... but it's a question of power at that point. I'm setup at home, so I have limits on how much power I can draw
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Of course, if I could find a nice cheap data center willing to rent me cabinet space... oh wait... I've gone off topic.
SP-10? 
Nevermind, found it on spondoolies.
Yup, the spondoolies one. RoadStress is running a group buy for $3200 a unit... 1.4TH/s. I can get the S2 for $2199 (coupon) and get 1TH/s... both draw about the same 1000 watts. Personally, I really like the looks of the SP-10, and it's now just a question of "does the SP-10 offer me enough value to justify the extra $1100?"
Of course, there's also the question of explaining exactly why I just spent that much money on "another one of those mining thingies??"
