To achieve a 730+ score, you'll need to improve in both Quant AND Verbal.

That said, if you're looking for the greatest return on investment (time-wise), I think you'll benefit from a quant focus.

On the Verbal side, many students experience a score boost after spending some time on the "rule-friendly" Sentence Correction section. Reading Comprehension and Critical Reasoning probably have the lowest return on investment. In particular, it can take a long time for non-native English speakers to increase their reading speed to the point where they have a decent chance to just get through all of the passages.

You should also spend sufficient time working on your test-taking skills (endurance, time management, anxiety control, etc). I can't emphasize this enough. 700-level quant/verbal skills combined with 500-level test-taking skills will likely result in a score that's closer to 500 than to 700.

If you're interested, we have a free time management video at https://www.gmatprepnow.com/module/gener ... es?id=1244

Cheers,
Brent