which is approprite tikz or asymptote

[abdelkader belahcene <abelahcene@gmail.com>]

Hi, everybody

I want to insert graphics into latex file,  for logn time I used xfig to create graphs, but it is limited, specially for math formulas, dia  i find not easy to use.
Finally I want to try   asymptote  or tikz  which one is more appropriate ??

thanks for help
regards