Play top or Dome Bird Cage for my African Grey?

I personally would go with the one with more space. BECAUSE! yes i even have a reason! Which i rarely do! haha. Because birds don't NEED a play top to play on it. Mine just climbs up the bars and sits on top anyway. Plus i bought a very nice 19$ play set that is exactly like the ones on top and just set it on a shelf next to the cage it works perfectly