Asic Suggestion

Hallo guys,
I am ready to order a new asic miner and i will need your help.
What is propably the best choice Antminer D7 or Goldshell CK5 ?
Comparing the cryptos which one has the biggest potential on growing further Dash or Nervos?

Nervos is a better project than Dash in my opinion. Dash is a privacy coin, Nervos aims to be high volume scalable blockchain. Nervos will be more useful in everyday use than Dash.