Dont go even near to Antminer S9. You can get more profit with the help of a faster ROI if you check out the S9 is high-priced as it is a big company.
I can't even tell what you mean (help of a faster ROI 
). The S9 ROI is pretty decent for me and it isn't horrible, at ten cents per kilowatt you will make ROI in around a hundred days. There aren't any better competing BTC miners out there so if you are looking for a Bitcoin miner, this is what you will want.Literally all miners come from big companies. Avalon, Bitmain, Bitfury... Sidehack gets his chips from Bitfury, a big company. There's no way around this economically.