The choice of motors for your boat is only slightly more traumatic then purchasing a new car! :shock:
Seriously, there's no "right" or "wrong" answer. I'm in the business and there's almost no engine currently available (not including an "old-style" carbureted 2-stroke) that I wouln't happily run and that isn't likely to give years and years of service. So first, dismiss the idea that you have to avoid a "bad" engine. Which means you really get to pick from a whole bunch of good choices.
The first consideration is the dealer you're going to purchase your new boat from. If they have a great reputation and you trust them (and you should if you're spending that kind of money!) then purchase the engines that they feel will give you the best performance (overall, I'm not talking about speed) after they discuss your needs with you and find out how and where you'll use your boat. Also, if you have to travel very from from your home to purchase the C-Dory think about what dealership in your home area has the best reputation and what brand (or brands) they service and support. As good as the new engines are you'll always need access to routine service and/or parts even if it's only oil fiters, plugs, thermostats, gaskets and such.
What's important to one peson is not even a blip on the radar for another. One customer may choose a pair of Suzuki engines strictly because they have fuel injuection, another may choose a pair of Honda engines because of their low weight, another may choose Evinrude E-TEC's for their technology and low maintenance requirements, and yet another may choose a pair of Mecury engines becuase they look good on the boat, and finally someone else might choose a pair Yamaha engines strictly on the basis of a recommendation from the dealer the customer trusts. Those are all 100% legitimate reasons for choosing what each customer did. So really, what are the most important things affecting your choice? Price? Weight? Technology? Service availability? Alternator size? Engine appearance?
I can absolutely guarantee three things about any engine choice...there is someone out there that hates the engine, there is someone out there that loves the engine, and there are a whole bunch of folks that are in the middle (some happier or more dissatisfied than others). It's hard to choose a really poor engine; it can't last in the market. It's equally hard to buy a really superb engine (as in better than everything else); if it existed the others on the market would go away due to lack of sales.
Find out what folks in your area like and why. I'm willing to bet it's usually the result of a good dealership providing outstanding service. That's a bigger factor really then whether Honda, Yamaha, Suzuki, Evinrude, etc build a "better" engine than each other.
Have fun...buy what "speaks" to you for whatever reason that happens.
P.S. - A C-Dory 22 on a bunk trailer is realtively easy to shove over to center up if the bunks are wet. Some folks are probably stronger than others but typically it's not a really difficult thing. A roller trailer will not center the CD22 better than a bunk trailer (there's just nothing to center on) and shoving it over once out of the water is very difficult if not altogether impossible on the roller trailer. The roller trailer has other attributes that may or may not make it a better choice but not from a centering standpoint.
