FortiAP 221C vs 223C

Hi

Did anyone had the chance to compare 223C FortiAP with 221C ? I'm wondering if the externals antennas can have an impact on range or if it don't change much.

I have somes 221C and since esthetic is not an issue for us I may order 223C next time, or have some in test to see.

Regards

Jean-Eric