It looks like the National Capital Boat Show is coming up in March in Chantilly. That's a pretty good option to get a feel, in-person, for what the differences are.
I'm a boat owner, and I'm always dreaming about additional boats, and within 10 years, we'll have a small yacht.
I don't fish, just have no interest whatsoever. So any advice I give there may have a huge blindspot.
Usually, when people say small boat for inland and coastal fishing in the Outer Banks, that leads them to single-engine center console boats. Grady White is like the Mercedes Benz of this style. There are other options that are probably better values.
The other thing to ask yourself is how many people you want to be able to carry. And of course price, new, or used?
As a very general rule in boat design, when you have a deeper "v" in the hull, that is better able to handle any waves, because it cuts through them. But this can also mean that it draws more water (it sits deeper in the water). You didn't say how shallow the shallow canal is.
Modern, four-stroke outboards have become extremely reliable and low-maintenance. On my 6-year-old Yamaha 150, I've done nothing but annual oil changes and it has never given me the least bit of trouble. Starts and runs perfectly every time.
When you look at this boat, what are your thoughts?
https://www.boattrader.com/boat/2017-sportsman-island-bay-20-7720280/