Hi, can anyone tell me if a flexi-brush is good or bad to use on a rough collie? I'm slowly grooming my girl myself as she Hates it, but slowly with lords of patience and loads of treats she is now tolerating it for some of the time and not trying to 'kill' the brush (or my hand). I'm using a pin brush and a bristle brush and comb, but she hates the slicker brush and rake, I was wondering if the flexi brush might be better. If any one that grooms rough collies can advise me that would be great. I know I still have a way to go but slowly I think I'll get there.