SP10 is more suitable for installation in the engine room inside, but its price is too expensive! Even if Bitcoin prices back to $ 1000, your investment will not be fully recovered, even without considering the electricity cost.
And the price of S2 is better? It's actually more $/GH than the SP10. And with S2 you get this:
You'll need to RMA your current S2 back to bitmain and they will send a replacement out to you. Could take 2 or more weeks.
This is an ongoing issue with Bitmain in general. I too was just hit with a failed part, and the turn around on failed product WILL result in serious loss in mining payouts. There is an advantage to going with Bitmain for mining hardware, however due to their support on hardware with issues, you need to factor in as serious losses in revenue .
Oh yeah dead bitmain gear you get fucked on the rma. that is pretty true. Takes a long time for replacement. they ask for a deposit . Happened to me.
But a usa dealer sent me an s-1 upfront no cash no coin. I sent him the dead one. Since he is a big dealer he handled the rma for me. So I only lost 4 days mining but no replacement deposit.
Thank you to bobsag3.
Oh I came up with a model that makes the sp10 a clear winner. btc stays dead flat 400 to 475 usd a coin.
Diff jumps like mad from the current 8 to 22 really fast. 2 or 3 jumps
Then diff stays dead flat 2 to 5 % a jump for 8 months.
The sp10 and the sp30 would rock with that model. better then the s-1 or the s-2.