Any suggestions as to which one is better? The Cargill Right Now Onyx blend or the Hoeggers Golden Blend? I have read something possibly about the Hoeggers blend not having chelated copper and that being a problem. Also will we still have to supplement with Selenium in addition to one of these blends? Our goats are Alpine males, going to use them for pack goats and they will be neutered. Or is there a different mineral blend entirely that I should be looking into? Thanks! I am just new to this so all information and help is greatly appreciated!