What were the reasons? S is more altcoin oriented?
I can not even remember, haven't representatives from globemining call office described all models fully?
They had, sure. But I am not a professional. That's why I can not decide which option to choose. And quite not sure if I need to start mining or not at all.
As for the first question, I would have chosen S17 model. As for altcoin mining as a hole, I guess it's better to start now, as all these currencies are growing. If this trend goes on, you will payback all your investments soon