Piling on. The lack of rod holders struck me immediately - but worse is no ability to add more easily. While moving the helm out of the middle may be beneficial, the electronics pod looks very crowded and limited. The entire helm seems a bit cramped compared to the 330. Not a fan of the cabin layout - we have never sat down at the table below in the 330. While the cabin seems like it would feel larger especially toward the mid berth, it also is more like a single great room. One of the things we love about the 330, is that there is at least the feeling of privacy for my teen daughter who sleeps in the mid berth. The 340 does not have this. I do think the central stair/ladder is nice, however.
Like most new boats seem to do, this one adds a ton of accessories which are likely to need work ($$) after the first 5 years, many of them add a lot of complexity as well. Time will tell.