Labcoin will be mining with their chips in less than 2 weeks, while ActM lives off the promise off 28nm chips that will most likey not be hashing any earlier than december. I tip my hat to anyone with so much patience, but if you want to see success soon, you'll go with LC.
Those chips will be generating dust as soon as the big 28nm players come to the market. Don't get me wrong, people are entitled to jump on quick money, but I'm in ActM for the long haul.
Do you think ActM's share price is going to increase significantly in the next 2 weeks? Labcoin's will. If you sold your ActM shares now, bought Labcoin shares, sold them 2 weeks from now, then bought ActM shares, you'd end up with at least 2x as many ActM shares.