We have just had our 297RSTS for a couple of months. One trip to Florida and back. We love the trailer. So far quality is OK. There are a number of things that we need to get fixed after the first trip. Dealer has already order the parts but these are minor things with exception of the fridge not working on propane but then that is Dometic which most trailers have.
We really like the layout and it has washer/dryer prep too. That said if I would have had a bigger truck would have gone with the 315RLST for the king bed slide and huge closet. It also has the pantry that would be nice but with the hutch we have plenty of space.
Check out the Grand Design owners forum as they have a lot of very happy campers there. If any of them have had issue Grand Design seems to go the extra mile to keep the owners happy.