Just buy a preorder from another company.
Then you don´t know if it will ROI in the beginning.
Later you will realise you lost much more then buying asicminer hardware.
Lulz so you are saying you'd lose less.
Isn't the point to not actually lose at all?
Keep the BTC and you won't lose BTC

Buy AM and you almost certainly will lose.
Anyone who got a 10GH/s miner (of any brand) on the 14th of May will so far have made ~26.6BTC PPS expected.
Hopefully no one paid 50BTC for them back then, no chance they'll make 50BTC ...