Soft question: Are undergraduate journals a good choice for publishing papers?

I am 18 years old (high school undergraduate) but I have had my first scientific paper published by the age of 16 to a regular (non-undergraduate) journal. However, I am preparing some papers for publication related to Computer Vision, Computational Geometry and Scientific Software and, through a scholastic search at the Internet I found that there are some undergraduate journals that are often more flexible to what is being published since they contain undergraduate articles, as well as in the reviewing process.

So, generically speaking, are undergraduate journals a good choice for publications even for someone that has already published some of his work to regular journals? I know that it heavily depends on the content and the significance of the contributions being discussed in the paper but do undergraduate journals trigger the interest from other researchers to cite work and get informed from them?