Personally, I prefer Bielsa because of his brand on football and his ambition to have more power and say on players contract and transfer. But I know it's unrealistic. On the pitch/training, our players probably won't be able to handle Bielsa session or tactics so soon. If Bielsa is uncompromising, we will definitely go down.
Realistically, Dyche understands the pressure and won't shy away from a challenge. But I think he would be another coach with signings shoved to his team. Having said that, we are only few days away from deadline day and I doubt we will sign anyone - so the team requires a very tactical coach who is flexible and able to organise a defense. With the current crop of players, Dyche is actually our best chance to survive - although it is not guaranteed.