i like to flight controller which can run ardupilot.i am planning to build fiixed wing.my preference would be omnibus or open pilot revo orcc3d revo  but you can suggest me any other FC.

I have 2 unused sealed OMNIBUS Betaflight F3 AIO with Baro from Banggood. User manual here: http://files.banggood.com/2016/09/MANUAL.pdf.

I also have 2 unused, sealed FLIP 32 - F3 - OMNIBUS V3 ( W/ BARO OPTION) imported from US: https://www.readytoflyquads.com/flip-32-f3-omnibus