A lot of good points mentioned. It's all about need and then preference.
My kids are 18 & 20 (boy & girl) and the only time we can all camp together is Thanksgiving.....so we can make it work. Other than that weekend, it is usually the wife and I and perhaps one of the kids.
Had my kids been younger when we bought our HTT, we would've bought the 233S. It makes morre sense for three bunks.
However, given the kids ages, and the frequency that they will camping with us, the 23SS seems like a great choice. We love the floor plan and have not regretted buying it.
2009 GMC K1500 4x4 Crew Cab
2012 Roo 23SS
E2 Trunnion WDH (1,000 lb / 10,000 lb)