I believe that the 2300 and 2400 are the same boat structurally with minor cabin changes.
I am definately not an expert, but I can tell what I have notice with one sitting in the shed.
Alot of these are way under powered from the factory. The 2300/2400 needs 140/150 per side to get the best out of them even better with counter rotation props.
Don't let sale sale guy tell you the need 2S because a 4S is to heavy.
I can load the bum with a 200lt esky load with ice and a couple of fishs( thats all I can catch) and she doesn't even mind.
Avoid the ex commercial boats, as they would have been flogged. Most of the privately own ones are in fairly good conditions. Be wary of non OEM works, usually its to rectify or hide something.
Apart from that they are VERY good and dry boats. Not the best boat for trolling all day due to tunnel slap. When buying one look at the area where the wave splitter is and try to find egg shell cracking, if it have, it mean she have been driven hard in her past, not serious, but be mindful.
The ugly side of these usual is in the weight. How heavy they are and the Noosacat trailer that they come with are at best minimal fit for them. For such and exxy boat, and level of weight, you would think they put a more robust trailer under them.
Oh the last thing, anything that has to be done after delivery by Noosacat carries a hefty surchage.