I personally like the newer "bigger" ones for lack of better word. I am in a good position having a mining area with where power and noise is not a issue currently. Only thing is with what I pay in electricity all I can currently mine with is S9's and GPU's (altcoin's). Really the S5 was a miner that ran hot and loud to you could do things to help, but I don't see it is a great miner for a room you use stock.
And I'm not saying it was a bad miner I really liked mine. In fact I liked the S5+ even better at the time that was really something to have so much power. I was sad when I had to sell that one and upgrade. If you had free electricity and looking for a miner of this generation the Avalon 4.1 was much better for a normal room. But it was a higher priced unit.
But yest S5 if free electricity can still earn, just make sure to do some ROI math as you don't want to pay to much. S7's are getting awful cheap anymore so I think a lot more of free will look there and then deal with deal heat/noise.