We have a one year old White Hawk 28DSBH and love it. We just got back from a 4100 mile journey from Seattle to the Badlands, SD and back via Yellowstone. Last year we took a 3200 journey down to San Diego. It's done well on extended trips.
What I like about it most is the amount of storage it has. The front hatch doors are larger than competitors, and also by not having a U-Shaped Dinette and a top bunk ladder, you get an extra cabinet. This is huge when trying to store enough food for the trip. We have had some minor warranty items such as the LED's on the awning going out, and the lazy susan on the TV binding. All were fixed without issue.
As for Delamination, I am obviously hoping for the best, but we do things such as checking all roof seams, checking all light housings for sign of water penetration, and making sure moisture doesn't build up inside the camper. However I would do the same for a non fiberglass trailer. At this point no signs of delam.
My wife and I have attended several RV shows since our purchase and we have not seen another trailer with the floorplan that we liked better. This forum is very knowledgeable and supportive, so ask away.