I am spending a few days on the boat this week, so I'll take measurements. But I would point out that the boom is short, and so has never been an issue on our 323.
Also, fwiw, the berth on the port settee is wider than the settee, as there is a panel underneath which slides out to provide additional width. Only a few inches, but makes a big difference as a regular settee is a bit narrow for sleeping!
I have not been on an Endeavor32, but a few differences I spotted:
- the 323 does not have a quarterberth (personally I prefer a deep locker to a small quarterberth!)
- 323 has a nice chart table (for me, that big plus which I constantly use)
- the head/shower is dealt with very differently
- 323 has a skeg - some like, some help. Protects the rudder, makes backing up trickier
AS ever, the biggest factor in any new purchase is the condition of the boat!