Who are the better 5th wheeler manufacturers?

I would suggest checking out the Sabre line by Palomino, especially if you've found a floor plan you like. We had one for 4 years and really liked it. It is a well built fiver. Warranty repairs can be performed by most any Forest River dealer,of which there are many. They also are a very good value for the price you pay.
Good luck with your decision and I hope you and your family enjoy your travels.