I'd choose the engine that is most dependable and can get you back to the dock.....easiest to maintain.....reasonably priced.....I would "lurk" into some other boating boards like FloridaSportsman, BoatUS to check for recalls etc, and boat and trailer magazine etc......take it all with a grain of salt.
Finding a good motor is getting easier and easier, warranties are now up around 6 years in general....It can boil down to who's got the best deal and if there is someone that can service your motor if you don't and color. Man, if it comes down to color.....that will tell you how good things have gotten.
Black: Mercury Saltwater Optimax, Verado, Etec, Yamaha, Suzuki
Silver: Yamaha(more of a Carbon), some Tohatsu's(some black), Honda
White: Evinrude, Johnson (some of which are part or all Suzuki)
Now, what color do you want?