I have a 2010 Gulfstream Kingsport and it has been a great trailer. We had a problem initially with the cheap tires cracking. Gulfstream sent us $90 per tire (including the spare) under warranty and we were able to replace them with Maxxis. The only other issue we have had is the kitchen faucet broke. It is made out of plastic...I am sure it is a standard faucet that they use in RV trailers. We replaced it with a regular residential faucet from Lowes.
Other than that...it has been a great trailer. We have enjoyed it very much!