KnCminers scryptminer looks increasingly interesting after there last announcement 27 mars about it's minimum hashrate will be 250 MH and that it's power consumption will only be 800-1000w.
The million dollar question thou is how much the difficulty will increase for litecoins in the future and how profitable on other altcoins will be then. I do think it looks like a good option for diversifying the investment and spreading out the risks/rewards to different areas.
Price 9 995 usd/250MH = 39.98 USD/MH
Watts/MH 800-1000 / 250 = 3.2-4 watt/MH
as a comparison gridseeds miners starts at 158 usd in small quantity's for ~330-380kh @ 8-11 watt so 416-479 usd/MH 24-29 watt/MH
So KnCminers Litecoin/scrypt ASICs will be the last one standing when all other scrypt mining equipment thats possible to buy or preorder today will have become unprofitable.
If one plugs in the numbers for the KnC miner here
https://bitcoinwisdom.com/litecoin/calculator Electricity Price: (USD/kWh) 0.10
Pool Fee: -8% (for a mining pool that mines most profitable coin and outperforms LTC by 8% based on how pools like wafflepool and cleverminer performed last month)
Hash Rate: (MH/s) 250
Hardware Power: (Watts) 1000
USD/BTC 431.505
Start Date: 75/105/135/165 (for delivery's 15jun/15july/15 aug/15 sept)
and then adjusts difficulty increase you come to the following avg difficulty increases for profitability:
LTC difficulty now 5 746
Delivery avg % diff at BTC/ date reach difficulty then
date increase delivery week profit
15 june 5.3% 17 897 2.564 15 dec 2014 249 000
15 july 4.4% 20 911 2.14 11 mars 2015 390 000
15 Aug 3.7% 23 699 1.784 6 mars 2015 187 000
15 Sept 3.3% 27 301 1.694 18 may 2015 273 000
The usd/btc on exchanges really is ridiculously low at the moment so any investment in mining equipment when the funds comes from BTC is effected a lot negative by it, but when the price jumps up a bit to 500-600 usd at least the numbers would become slightly better.
The litecoin difficulty will surely jump up to 20-25k at least, just based on KnC's ASICs if they sell out there batch of 2 500 units but the question is if it can keep increasing in the same rate after that, probably not so the profit will likely be better than the calculations indicate.