The best thing about this software is its ability to solve large scale problems at once... without having too many issues as of now I have used it for solving power network analysis. But in future we will be using other fields such are transportation networks etc. So far there haven't been any issue that has come up while performing these tasks It is very easy to use, I have not found anything that i donot like in this software. It will make your work much easier. If you are solving MIP problems then welsim would be best for sure as its integrated feature makes problem solvion quite easily.