I own three S2's (1THs) that run right at 550-720GHs poolside if rebooted twice a week. Otherwise less. One has a hashing board that dies after 5-6 hours (all x's) until it get s hard boot.

I had hoped to bump them out of service, replacing them with S4's. After seeing the initial release price, there's no way I can gamble another round. I got taken once. It won't happen again. Sorry, Bitmain. Not even close to being worth the risk. I see how you treated me on S2's and S3 Batch 1-4. Your customer relations are as shaky as your hardware.

(Full disclosure: I have ten S1's and two S3+'s and love every one of them. The S2's are just absolute dogs and S4 pricing is a farce.)