My 06 had the plastic ones so I put in the Delco aluminum ones. The plastic ones were in great shape and the mileage was around 105k but I knew it was only a matter of time so the upgraded ones went it.
I have to disagree because my 06 is a dream compared to my 97. 06-08 GPS have much less issues than the 97-03 gen. 04-05 has its issues but not as bad as The previous gen. The only major job that's been done to my car is the LIM gaskets and that's not even a hard job.
The overall quality of the 06-08 years is way higher than the older gen too. I currently have about 135k on it now.
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