India: should they go for F-35s or FGFA/Su-57

theres a bunch of reports suggesting India is examining the F-35, but other reports say the Americans refuse to sell them unless they withdraw from the Su-57 programs.
The Russians probably feel the same way, so it is unlikely they could operate both.

if they had to choose one or the other, which would it be?

Su-57:
India already invested in it
probably longer ranged
Can likely be more customized to Indian needs
long history of cooperation with Russia
better likelihood the Russians will allow them to produce most of it domestically

F-35:
could operate off its carrier
It might be possible to receive them earlier
Might be cheaper due to large scale of production (I believe there are already more F-35s produced than Rafale or Gripen already)
common strategic interests with the US