Best Hardware for bcrypt

[slyexe]

You are asking what is the best hardware for bcrypt but yet you've already been given an answer. The follow up question of asking whether to use 1 or multiple gpus is irrelevant, you know which is the best hardware its just multiplying the hashrate by X amount of GPUs you want to use. There's not much else to tell you, bcrypt is slow so the more power you throw at it the sooner your wordlist will finish.