We started with a 14 ft SB Williwaw and custom scenic/fish frame some 10 years ago. Has served us well!!!!
As our children have gotten bigger, more overnight longer trips the 14 ft has gotten smaller! We are going to go to a 16 ft for those trips. The IK helps with the kids , and the 14 ft is great for them to learn to row.
We will still use the 14 ft on our daily trips. If you plan on longer trips and boating with family and only one boat, go for the 16ft. Loading can a problem so rig a roller or other "assistive device".
As always, the cost becomes a contributing factor. We're still looking for that perfect, 16ft lightly used rubber, no pun intended. No crassness needed in replies!!!!!!!