Much be reliable source
Thanks
You have a LOT of reading to do. This entire section is to mining Bitcoin, not altcoins. And I don't think there really is a sha256 altcoin worth mining over BTC. So pretty much you will mine BTC.
If you really want alt coin's then they do sell some scrypt asics... but a lot of it is dated. So I would do BTC myself, and also check on ROI math before investing, it's becoming a hard game to get into.
Most Scrypt asics are getting dated to. There just is not near as much R/D in this sector as BTC miners. I cant think of name there was one that made a dual... and decided to keep them all internal.
So a lot of the gear if someone releases a half way new one... they will just be blown away. Heck A2's are still decent now they have LONG live past where I thought they would