I too am looking at a Sunseeker. I have my eye on the 2650 model, mainly because the carry capacity is much higher and its under 30ft. The model I looked at can carry close to 3,000 lbs, and 1,000 of that is for gas, propane, passengers and water, I checked the numbers on the labels in the door frame.
I can see they are not the best built, but they are not the worst built either. I personally can't afford the best made out there. Besides its a **** shoot, if you are going to get a lemon or not. When you read the internet just remember, the complaints far out way the positives. That's because happy campers don't usually get on the internet to praise their products, while complainers will scream from the rooftops.
All of the RV's basically use all the same components, and the more bells and whistles, the more there is to break as it bounces down the road.
I for one, can't wait to get "on the road again".
Good luck on your purchase.
Former 5ver owner
Upgrading to a Class C