Most of the "recreational" or practice cartridges advertised by the bigger Russian manufactures, such as Wolf, Brown Bear and Golden Tiger are all with in the same category. They are all close enough to mil-surp specs that you should feel comfortable with an ample supply of any for SHTF purposes as well as practice.
I really wouldn't want to get shot with any of those so called "practice rounds". Most of which are also available in HP or SP (better for SD) at a price difference so negligible it's worth stocking up.
Don't be scared of any of the major brands, however
I personally steer towards mil-surp from various countries of origin. They seem to perform well
above the average lower-end commercial cartridge. Sure they're corrosive. . . BIG DEAL
clean appropriately and your AK will never know the difference.