Also the actual value of Mathematica or Maple seems to me how good solvers are. E.g. when it comes to Integrals or just solving a non-linear equation. Also most

Also the actual value of Mathematica or Maple seems to me how good solvers are. E.g. when it comes to Integrals or just solving a non-linear equation. Also most common tasks work good enough. A good/fast UI is also important (like for Maxima, although I miss modern convenience a bit)