hi oswin,

Thanks for your input. However, it is really hard to understand your logic.

1) You said “them was totally scam they only use black arrow chip”, this is a serious allegation and you’d better have hard proofs. We certainly hate any scam as we are burnt before, but we do encourage the new companies which could provide real top line rigs to us.
As I know up to now, there are only 2 new 28nm ASIC rigs coming out soon, this is the one which has real miners running in a pool from the beginning of Feb and frankly you’ve to admit the results was very promising. Another one also boast to ship be the end of March, but does not have real rigs running yet, which means it’s still a toy in the lab and still a long way ( at least 1-2 weeks stability testing) to go from lab to mining pool.

2) You mentioned that “now the chips was lower price then they bought,them show me on mining result start from February, http://eligius.st/~wizkid057/newstats/userstats.php/1swrtyBsp9odruX65upeyubAVSAyggh78,around 60T on mining” , so what’s wrong with that? Actually I just checked their web site, here is quote about their testing miners, which is more clear.

“ In fact, since launched in January, more than 50 sets of JT Miners have been running stably in mining pools for half month without any crashes or hardware problems. The real life performance has been excellent: with 1TH/s hash computing power under low-power mode (can be overclocked as high as 1.2 TH/S under better cooling condition), the power consumption is 640W (ASIC consumption) when being tested on wall socket at 923W (can be optimized at 750W-830W in the newer version). These figures suggest that JT Miner is the most powerful and one of the most energy efficient Bitcoin mining devices utilizing the smallest silicon die area in the market. ”[http://www.jtminer.com/jt-miner-goes-live-for-sale ]

3) You said  “if you buy with them,is not profit any more,they already get all the profit(coin） on 28nm before to your hand”. What’s your logic here? Are you suggest that we should not invested any 28nm rigs because JT Miners have good ones? And you can profit if you get 28nm rigs from other suppliers? And how could “they already get all the profit(coin） on 28nm?” By the way, from  their website, at this moment, this company JT Miner seems mainly open to high volume orders from professional pools, we, as individual miner, need to see if we are lucky to get one in time.

And finally, would you mind to preview what you are writing before posting it to the forum? This is a professional forum and please show your respect to the forum readers.