Bob: I remember Les Lampman, who was then a Honda dealer, tell me the new honda EFI 90 was very problematic when it first came out, I think around 2006 or 2007. He had more than one customer have a bad experience. I believe it had to do with the electronic computer controls, and I believe the problems have been resolved. Older and more recent Honda 90's have been bulletproof.
I'm a Honda guy: cars, outboards, small engines, everything. I've had very good and trouble-free service, with good performance. I've had zero issues with the 5 Honda outboards I've owned, but they were all bought new. Not so much with Mercury (1), Johnsons (2), Evinrude (2), and the Yamaha (1) I've owned.
I agree with others that it's more about the previous care than the brand, though there are definitely a few bad models out there by all the manufacturers. It pays to research and ask reputable outboard mechanics.
One easy visual test is the presence (or hopefully not) of salt residue around the joints between water passages under the engine cowling
Also: extremely low hours on an older boat can indicate lack of use, which may be worse for the engine than a lot of hours.