CSB + Guibo parts OEM or Aftermarket?

[Lanister]

Hey guys.

This has been discussed quite in depth, I know. But I still have questions :)

My AT coupe is at 90k and I'm starting to feel that talked about vibration on hard acceleration. The vibration quite faint but I notice everything. I did some reading up on it and it's likely that it's CSB + Guibo time. Standard procedure. I started looking into parts and there are some interesting cost-effective kits out there. My question is, can they counted as reliable or OEM is the way to go?

In case of OEM route, is there an OEM kit that includes the whole assembly? or do I have to get the mount and the bearing separately?

http://www.ecstuning.com/BMW-E46-330Ci-M54_3.0L/Drivetrain/Driveshafts/ES48620/

http://www.ecstuning.com/BMW-E46-330Ci-M54_3.0L/Drivetrain/Driveshafts/ES48595/

Is it normal for it to start go at 90k? It's a California car, so the car has barely seen any rain, let alone salt. Or that just happens?

[Avetiso]

I'd go OEM. Such a rare replacement doesn't warrant the risk if the aftermarket part sucks.

[Lanister]

Yeah, I was thinking the same thing. The price difference is something like $50.

[az3579]

Always buy OEM with regards to bushings or anything that degrades over time, unless an aftermarket part has been proven time and time again to last longer.
OEM is almost always the best quality. Cry once, buy once.