масло масляное

I've said this before in another thread, but I used to work in a butter factory. As far as bricked butter is concerned, buy the cheapest shit you can find. It's literally the same stuff. There are like 3 butter factories in the US, and they send them off to get packaged. That's what the company I worked for did. The butter came in 22kg boxes and were put in a giant churner for freshness, and that churner pushed it through the pipes to 16 different labelling machines. We had 200+ labels we would put on them, Land O'Lakes, Crystal, Great Value... Literally same butter, same machines. Have to fill 4 pallets of Great Value today? Put the labels in machine 4 for a few hours.
Salted and unsalted, that is the only difference.