DO NOT GET INTO MINING.
It's a waste of god damn money and electricity at this point. Do not be fooled by the guise of money printers.
Mining sucks. I used to mine before the ASIC came into play as well as afterwards with the S1 miners.
Needless to say you will likely never break even unless you either have free electricity or you manage to mine with them for a bit and sell them to some sucker here on the forums for some ridiculious overprice..
I know mining seems like a good idea on paper.. Its not. Its's shitty, hot, loud and basically fruitless. These I learned first hand.
This is not really a fair impression of mining. I have done well with mining, you just have to have the right things in place. It's no one size fit all.
If you have cheap electricity and no vat, there is a chance. ROI is in no way guaranteed. I personally love it and have had good luck. I do have a mining area so the heat and sound is not a issue.
Can I ask what is last miner you actually mined with? Curious as to how current.