Been away for away from this thread..
le wut?
What is the most accurate ASIC miner Profit Calculator these days?
Mine
But it still operates within margins of peering into crystal balls as to what the USD/BTC rate is going to do, and what the Difficulty is going to do - so, pretty much: take your pick of calculator, they're pretty much all equally good/bad.
https://tradeblock.com/mining/http://www.bitcoinx.com/profit/https://bitcoinwisdom.com/bitcoin/calculatorNote: Mine isn't really much different from any of the ones available online, except that it takes historical data on difficulty and when it's likely to change (https://bitcoinwisdom.com/bitcoin/difficulty) into account, with difficulty remaining constant until the next change, instead of a daily or even monthly fixed % increase), and puts up some alternate scenarios. I'd throw the libreoffice file up somewhere, but I'd rather some web programming person make an online one