If your goal is to actually put out high-quality apps, do not switch away from doing them natively. No cross-platform kit can compete. You are making sacrifices, sometimes big ones, in order to get the cross-platformness.
My understanding is that cross-platform tools have matured enough to be used as replacements to native implementations. Is that not the case?
If you are aiming for more than the basics, you'll run into trouble or impassable roadblocks.