HI i'm off to taiwan shortly and i will be looking at buying some gigabyte gpu's to build myself some rigs . anyone suggest the best cards to buy for mining altcoins.
I suggest you don't buy gigabyte, there has a problem in the blower and thermal system. gigabyte faster rise temperature if compare with another brand such MSI, Sapphire. better buying Sapphire, MSI, Powercolor.
for the best card, if you want a mining on ETH, ETC coin, using RX480, RX580 8 GB. the mining on Zcash or Equihash Algorithm, you can get NVIDIA 1070,1070 ti