I've never owned a brindle lurcher that was shite, and apart from a couple, all my lurchers have been brindle, a couple being extremely good.
Had a blue/fawn lurcher bitch that was pretty shite, she was my first lurcher, so that was probably down to me though.
Had a blue/fawn and a blue/fawn brindle, a black and two brindle kc reg whippets that were shit hot, sorry, one of the brindles was a pure whippet but not registered.
And apart from the blue/fawn lurcher bitch, ALL my dogs caught hares, some obviously more than others.
And now Gooey's gonna chime