I would imagine the newer wrx will be more comfortable than the older sti.
No doubt easier to find with lower kms & better condition too.

But if you are leaning towards comfort if personally be looking at a liberty GT.

The sti comes with all the fruit and is certainly a more exciting and sought after model than the Betty wrx.
Much more fun to drive than the wrx and gt, and will get the smile on your face quickly!

In either scenario, 2L is also more fuel efficient.