Hello,
as 3GB cards will soon be unusable for Ethereum and also Bitmain seems to bring ETH ASIC miners, I am looking for a good coin to mine.
What would you suggest?
Ravencoin?
ETC then?

ETC has a higher DAG than ETH
Also you can still mine ETH if you put your mind to it.
There's always Windows 7, Linux or Windows Server.
Actually there is no big difference. Both can be mined by 3GB card for a year. So question does not make sense.