Definitely with having your children, I would say the 233S, in spite of the smaller kitchen. Making up sofa or dinette nightly is a PITA. If you want more space for food prep and cooking, you can always look into a portable camp kitchen that many have and love them.
FWIW, with our TT we have a real bedroom for us. We also have a sofa bed with an air mattress in the living area and it's very comfy. We take a yearly trek to FL for baseball with our disabled adult son. This was the first year for really using the sofa bed. Toward the end of the trip - about 17 days, DH was really getting sick of even that set up. It wasn't nearly as tough as doing the dinette or sofa thing, but it gets old really fast.
