For people having the rig in the living room, also heat and noise can be a topic. And a cost of 0.30 is for some countries like Germany already the minimum you pay per kWh.
What is sure is there will come a bill for the electricity, what is not so sure is how the ETH price will develop. So if you want to be on the safe side, I would prefer the lower consumptiom (fix costs) over the slightly better (unguaranteed) profit...
A little OFF but couldn't help it: Sorry mate, but those of you in western Europe are pretty behind in terms of electricity bills. Here in Bulgaria the average cost of Kw/h is 0.09 EUR or $0.11 (similar in USA/Canada, just a little bit more than Russia and China), so we have tons of R9 280/290 still hashing away. And they are being sold second hand pretty good.
ON the topic I confirm the observations of everyone:
6 x MSI 1060 3GB (hynix) - 114 - 115 top (19 each) with eth miner. Claymore 9.7 is 110-111 + 1200 pascal (sia wasn't stable for some reason) . I run them at core +100, mem +550 PL 60% , power draw is 500W from wall with GOLD PSU
1 x Palit dual fan 1060 3GB (samsung) - 23-25 top with eth miner (mem + 800, PL 60%, fan at 55%) Don't know the power draw but i guess it's not so good given it's just 1 card - this is my desktop PC in the room where I sleep and I have no problems with noise. I thought I may need to buy accelero cooling for silence but not necessary
It's funny how the cheapest card is actually the fastest