Its a bit late but i would have said mamba, vine snake, viper, mamba, viper. Whatever they are though the look pretty cool.
How cool are mamba's they are like half way between the 2 best Aussie snakes(for those that dont know thats coastal taipans and common tree snakes) i would love to see them in the wild someday.
Points go to sammysnakes with hemiaspis a close second. Can't remember the name of pic 2 but I'll go with you sammy. Was told by the owner of the snake in pic 3 that it is atheris hispida-the african hairy bush viper. Dendroaspis viridis in pic 4 was a real stunner, looked like it had being airbrushed. My favourite-MANGSHAN VIPER! The Daddy is 2.1m!