Can u help me with advice, i have 7000$ for investion, do i invest in mining rig for litecoin or some hardware for bitcoin? Your advice?
Mining is a difficulty game, and you can hardly make any profit. It is better to buy bitcoin or litecoin with your money.
You should listen to this person.
Anyone whos telling you to buy, is from a position from experience of mining before it all crazy high with difficulty.