UTHM has good reputation among local uni, although the name is not as bombastic as UM, UTM, USM etc, but for me is good enough. I have friends graduated from there (formerly named KUITTHO) now working in big companies with good salary.
UNITEN, as you said, is private uni. What I know about the uni is the school compound is super big and nice, and the fee is 3-4 times more than public uni. My sister studied there, graduated already, working now.