2003-2008 Gas Motorhome: Chevy service problems?

My DW and I are considering selling our TT and purchasing a used class A gas motorhome. If you have a motorhome with the Chevy chassis, have you had any difficulty in finding a repair facility? Have you encountered any problems getting parts for the chasis, power train or transmission?

I'm leaning towards the Ford chassis due to it's reputation for better braking but have also read many threads stating that find the floorplan you want and either chassis will do the job. Anyone have any comments on the braking performance of the Chevy chassis compared to the Ford?

Thanks in advance for your comments and assistance!