I like the ar15 platform. for me, 308 is too expensive to have a blasting machine. I already have a couple bolt guns in the medium and long cartridges so I like having a smaller rifle in a semi auto.. saying this though, if I were to be able to afford. an ar10 in the future, I would stick with a well known manufacture. the biggest problam with the ar10 platform is that there is really no reliable parts interchangability between manufacturers. some things do cross over from one to another, but its not mch. Im hopeing to one day be able to become a manufature of the ar15 and ar 10's myself, God willing...
these are only OPINIONS.