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I use 4 amd radeon 290's to mine eth at a hashrate of about 120mh/s. I spent about $1500 and already broke even. I now mine about 1 eth a day.

Nice @Velourex, so you are basically getting a 100% return every 4 months. I'm a complete noob and I have not mined anything yet. I don't suppose you could take a picture of your miner, or provide instructions, maybe a YouTube video/channel?