considering the price and the difficulty level i dont think so it would be wise to invest in s5+, i dont know the different disadvantages of S5+ i am sure it wont be a silent machine and more over i dont think it is profitable if you are planning to mine in your basement. If you are able to aquire it at a discounted price then it is fine,but what i see in their site it is priced above two thousand dollars and you could barely earn thousand five hundred dollars a year.

 They ARE unprofitable at that high of electric cost, just checked using current stats and RIGHT NOW they are break-even at appx. 5.2 c/KWH - folks like me in VERY VERY CHEAP electric areas with rates less than that are still making money off them, but not by a lot.
 At 9c/KWH you're burning almost twice as much in electric cost as those miners are managing to make in Bitcoin mined value.

 An S9 should stay profitable for quite a while, even at 9c/KWH - just not VERY profitable - as diff increases are quite slow at this point and Bitcoin price seems to be recovering slowly from the recent exchange hack/theft.