I was wondering what are some good sites to purchase ASIC mining hardware for altcoins.
I have been involved in some mining projects before, particularly Bitcoin mining with ASIC miners. I strongly advice you to stick with official Bitmain website. There are many sites popping out when you make searches on google but unfortunately most of them are scammers and if you make a quick research you will see some consumers writing about their stories. Bitmain is selfish and arrogant company. They don't even ccare about customer service because even without that they make money. However, until a competitor shows up we are stuck with them.