I probably have the least "boating on them" experience of anyone who has replied, but I'll give you my thoughts. I have a 22 Cruiser, and I have spent a couple of afternoons out on a friend's 16 Cruiser.
It's kind of hard to put these in a logical order...
--The 16 is really simple to trailer and launch - it's just such a small boat, you can tow with many cars, it's so light, it's open at the back, etc. Not that the 22 is "hard" - I mean it's not like you are lifting it - but, for example, I could have towed a 16 with my existing car (station wagon), whereas I bought a different tow vehicle (van) for towing the 22. You really need a 5,000# tow capacity for the 22.
--The 16 uses portable gas cans, for better or worse (I think there is some of each); the 22 has built in fuel tanks.
--Fewer/simpler systems on a 16 than a 22 (I know you are thinking 19, but since I have a 22 and they are similar, I'm comparing to a 22). Yes, you can keep a 22 simple, but it still has built in fuel tanks, doors, locks, cabinetry, etc. etc.
-- Sound level: This is a biggie for me, and after spending a couple of afternoons on a 16 (with a canvas "back door"), I knew I wanted the better sound reduction of a solid door, which a 22 has. It's still not silent, but better.
-- The solid door also gives you a modicum of security for things aboard - not that it will discourage "real" thieves, but at least there is a door/lock there (token, but there).
-- I met up with Lyle and Janda (and their dog) on their 16 Cruiser at Lake Powell and they gave me a tour of their boat (See-Saw). They cruise it far and wide, often spending a week or more aboard. They come from a kayaking/backpacking background, and while their 16 is "primitive" compared to a 22, they keep the backpacking mindset, and so the 16 is luxurious in comparison. But it is a camping feel. A 22 feels more like a little big boat, with a "real" cabin that is dry and "indoor like," has a heater, etc. In the 16, I felt like I was outside, but sheltered. Either may be better or worse depending on what you want.
-- The 22 is cute, but the 16.... cute as a bug
-- I found the 16 Cruiser really fun for a couple of "day cruises with stops and lunch" for two people. There were two good seats, a little table for lunch or books (they may not all have the table), and a berth to either put stuff on, or nap on, or both.
Have fun choosing, and welcome to the C-Brats :thup
Sunbeam