Actually, if you set the bar at 200hp, that is a more significant break-point. Most aircraft in the category you are looking at will have lycoming 320 or 360's in them, which is essentially the same 4 cylinder engine, albeit some have fuel injection and wobbly props, and others don't. The major jump up in costs is going from a 4 cylinder to 6 cylinder lycoming.
Personally, I far prefer the fuel injected engines, if only for the reason of getting rid of the carb-icing issue, which just seems a bit antidiluvian to me. The extra power is nice too, and learning how to operate the wobbly prop is a non-issue and is very nice to have.
FWIW, when most people work the numbers on their weight and balance sheets, they generally discover that for anything other than a 'plane loaded with naked light-weight midgets, with no bags, flying for no more than 1 hour, with almost no fuel reserve, most 4 seaters are actually 2 seaters, and to actually lift 4 90 kg adults with bags over a decent distance, you actually need a 6 seater....
Have fun shopping and just remember that when it comes to internet forums, words of advice are like a55holes - everyone has one....
