Re: 25' Starcraft Chieftain vs 22' Starcraft Chieftain
The 25' rig will need more water, it will draft more than the 22.
If both are suitable, then EZ is right about looking at the power to make the decision.
Replacement cost for a trailer for the 25' will be much higher too, if the trailer is older.
Decisions, decisions

Good luck to ya!