Maya? Yes, that is a real good one. One of the best around. Though, it is not always the program. It is the artist using it. And you have shown to have some skills here.
It also helps to have a PC that can handle a high poly count for something as smooth as these look. Yes, smooth they are. ^.^
Maya? Yes, that is a real good one. One of the best around. Though, it is not always the program. It