Debbie, it depends on wants and needs, but from experience I'll give my 2 cents. My buddie and I have sister TT. I have the Laredo 291 and he has the Springdale 298? I have had mine 3 years, 2 girls (now 12 & 15) & 1 dog. With 3 bunks they alternate bringing a friend. In the 3 years, they have never bucked us on going camping, including the dog. He wines will I hook up, thinking we are going to forget him. I have even took a nap in one of the bunks, so I dont know about growing out of it unless your a little too round. The Laredo is easy to clean because of the smooth outer fiberglass walls. Easier to was also. I pull it with a Dodge 3500 Diesel single rear wheels. Hitch is the Reese Dual Cam 1200/12000. I dont even hardly now its back there.
My buddie with the Springdale has 3 kids (now 12,15,17) and 1 smaller dog. He originally pulled it with a Chevy 1500 and soon learned it was too much TT. Traded it for a Chevy 2500 diesel 2 wheel drive. He's real happy now, NO white knuckle driving and the wind pushing him into different lanes. The Springdale with the siding is hard too clean and/or wax. He also doesnt have a pantry for his food? Kind of strange. His kids love it.
I short we both love the outside kitchen, a must. The slide out on the Springdale 303 would be nice for the kids on rainy days. You'll have some.
Happy kids, happy parents.
Personally I would get the Laredo 303TG with a 2500 HD diesel with a Reese Dual Cam or Equalizer hitch, next time I would get a TT. That model came out a year after mine
But my next purchase will be a 5ver Toyhauler.
Food for thought. Good Luck!