Yes, there is more room on the 2320. Yes, it does "feel" bigger, particularly if you are on a full transom with bracket. For some reason the 2320 gives the impression of more additional space than is really there. If you are debating between these two boats, your decision to get a 2120 should be based on another reason, i.e. fuel economy, ease of trailering, launch and retrieval, cost, etc. If these factors are not an issue get the 2320. Even though the cabin layout is virtually identical, the ride is superior and the deck is more spacious. And get the full transom with bracket. The storage boxes and fish box in the transom make a huge difference. I wish my 2120 had a fish box in the floor.
BTW, I would not trade my 2120 for another boat, unless it is a 40+ foot Nordhavn. :wink: