Mine is just a breville brand one, so nothin too expensive.
But I think I go about it a little different to you guys which you might find easier and cleaner.
I get the full bag of oats (1kg) and blend them down to dust when they are dry and then put them in a Tupperware container till I need the scoops. Then I scoop that and protein into shaker cup and I'm good to go. It means that I only need to use and clean the blender once per week
I like that idea!