STG-44 w aperture sight or telescopic sight,and Nambu ,or BAR w Bipod,and Colt M1911.If u play Search and Destroy,I would suggest mp40 w flash hider or aperture sight. But the class depends on you,these are my best classes though.
The best custom class in cod black is- Primary- Skorpion with dual wield attachment Secondary- Strela-3 launcher Frag/ Concussion Grenades Perks/ Scavenger or ghost, sleight of hand, marothon-pro if you have it WithTiger paint.
Ten, there has always been 10 prestiges. In CoD: World at War and CoD: MW2 prestiging will give you some additional bonuses including more custom class slots in online play. also in all call of duty there have been 10 prestiges