Calling all Bullmastiff owners, opinion needed

In your opinions what is the best lead for your bulls.

Thanks xx

I see a Rottie in your avatar, a Bullmastiff would you the same type.

Mainly how you train and what you like, is more important than what others think.

Just make sure whatever it is, it is very strong.

That's my dear Keila who passed away in 2010. It's taken till now for me to come round to having another resident dog who is not fostered. I've gone for a bullmastiff because I cannot bring myself to get another Rottie, still feels like I'm replacing her.
I guessed it would be the same sort of lead but just wanted people's opinions is all x