Ok...so I DONT take mine to redline. I usually dont go past 7,000. (let the flaming begin) but I dont see how you can rev it past 8,000 and not be incurring some additional wear on the engine.
Maybe an enginer can explain if I'm wrong or not but I typically stay below 6,000 with occasional shifts to 7 or 7,500. I still end up at full throttle frequently but just dont wind it all the way up.
If I knew for certain the high revs really didnt cause damage or increase the likelyhood of repairs I'd probably change my ways but I feel like I am increasing the life of this engine and drivetrain.