Yes, Tommy has it right.
I think you pick the best deal you can get between the 3 brands. You do see some Suzuki's, but I don't know a thing about them. I went Honda as I got a smokin deal on it. It had been sitting for 3 years, needed major service, but it was clean, not all banged up. It was a 99 that was all original. It didn't run right, so I knew the carbs were gunked up, but the compression checked out and it didn't rattle, so I was good to go regarding the real expensive stuff. I got it for 1800. and spent 300 doing the carbs, water pump, spark plugs, and resealing the lower unit. Took 3 tries to get the carbs right, but my patience paid off in one sweet running 4 stroke for my project boat, that I'll likely never wear out.
Note that all but the newest Merc 4 Strokes use Yammi power heads (75, 90, and 115 are the same power head), and the older Honda's used Mercury lower units!
Honda 75&90's uses the Honda Civic engine stood on it's end. The 115 goes to the much heavier 4 cyl. Legacy (?) engine.
I ask about your ability as the carbed 4 strokes are something many non professionals can still work on. No super specialized exotic tools required.
They say the injected engines (fuelies) are much more reliable as there are no carbs that need to be rebuilt frequently. While it's true a fuelie has no carb, it does have fuel injectors and fuel pumps that can be every bit as problematic - only now you need a dealer to at least give you a hand....
Either way the carbed or the fuelies will need to be well taken care of to prevent expensive issues that can happen frequently. Just because you had the carbs rebuilt in the spring does not give you a license to ignore the engine for any period of time. Try that, and you'll be doing ANOTHER round. Fuel issues really haunt these engine unless preventave measures are taken. Here in Fl. the 4 strokes are super popular, fuel problems are frequent, so many are adding fuel stabilizer on every tank fill. -Al