PT framing and Trex deck that is about 15 years old. I hit it with the pressure washer every other year or so and it looks like new. It sits in the full sun, we have experienced none of the negatives that have been mentioned here. I would go that way again in a heartbeat.
Yours has been my experience also. Installation is key. Trex has little structural strength so adequate support is critical. Also, the planks can’t be installed too closely together or problems will occur.
