I have the entire line of Oster brushes, and my paint mare loves them, especially the fine curry comb. It really seems to get her upper lip going. She's half TB, so she has really thin skin, and if a brush is too hard, she'll pull away from it, and usually take a nip at you. Even the hard bristled brush is not too hard for her. I love my Oster brushes!!!!!
The Oster curries are so stabbity. XD Mainly the coarse curry. I prefer the oval ones with the different rows, myself.
I'll probably get a jelly scrubber.. and a 6pk of those Horse Shaves. They are amazing. The lesson horse I've been showing does not clip, so they are a godsend. And they're good for when you don't have the right clipper blade to do a close job on whiskers.
If I got an Oster brush kit, I'd give my trainer the curries. XD