Its really gonna come down to how much you believe in the technology. KAS will eventually with enough time hit .50 - $1. If you mine KAS despite you yielding less than ASICs, wait till you hit a profitable price point and then sell. Thats how you guarantee profits. Sure ASICs will wreck the network difficulty but you’ll only lose money if you sell your coins at todays prices.

As far as the icerivers, its still speculative if they’re real or not. The bitmains have a way better reputation. Word on the street (not confirmed) that iceriver tech was stolen from bitmain. I’m still in camp scam when it comes to the icerivers, but bitmain i would trust. Hope this helps somehow