Hey, might be a little late to this, but I can share my experience...
Just purchased a 2014 23 SE with the 4.2L V6 225.
I have known I have wanted a 23 SE for a while. Fish out of Moriches and Shinnecock Bays on Long Island, NY, with a few trips to Montauk. Needed a boat skinny water capable for fishing the sandbars and flats, but substantial enough for the nearshore wreck, bass, shark, and bluefin fishing we do. 23 SE is the ultimate do all. If I had the budget, sure, 25 Regulator and Jones Bateau, but for one boat Parker is tough to beat.
ANYWAY, I have rode or driven the 23 SE with the 150, 200 I4, 200 3.3L, 200 HPDI, and the 4.2 225. 150 was not enough for how I run it, no question. 200 I4 is adequate, but would make me pick my days outside a little more carefully. 200 HPDI was a great running boat, but those are getting long in the tooth, and do not play well with ethanol. The 200 3.3L was a good, solid engine, but not too much more "oomph" than the I4. The new 4.2l 225 is a completely different beast. First time planing the boat out with digital throttle I nearly fell over! Power for days, and the boat flew! Comfortable cruise at 30 mph around 3500 RPM. Wonderful pairing and I was sold right away. Max horse on the 2014 was 225. I could only imagine the 250 would be even ballsier! good choice!