I would be more concerned with the motor on the back than which boat unless you are talking mid-90's stratos. After Earl Bentz left, their quality went down hill. My biggest complaint with stratos is that they usually come with a johnson/envinrude on the back. I would stay away from any motors that have the word "Ficht" on them or "Optimax" if its older than 2003. If you are worried about the condition of the boat, get in it and put you weight on the drain and see if it is spongy. Thats usually where the floor starts to rot first. Also, grab the motor in the back with it tilted up and lift up on it to see if the transom flex's at all.