Iran: J-10 or MiG-29?

with sanctions in different areas being lifted.. Iran is trying to catch up and modernize.
one area that is in dire need is a replacement for all the j-7s, f-4s, and f-5s.

there’s only two real choices for Iran

J-10

or

MiG-29

Iran is interesting since they buy both from Iran and China.
which would benefit Iran better?