Whats better recoil/barrel design;Defender or Officers?

I understand that the Officers is a slightly longer barrel with a (troublesome?)barrel bushing,I'm not sure if the officers has fullength guiderod or not.I beleive the Defender has a bull barrel/double captured recoil spring setup like the Kimber ultra carry.I ask cause I prefer the officers size and proportion,but have heard many bad things about the factory recoil system/bushing breaking .I wonder if the current models have an upgraded/improved sytem or if their still prone to failure?

I don't see much talk or recognition of ownership here,maybe the officers inherant lack of reliability is why?

Do they currently make the officers with an aluminum frame?

Thanks,Byron