The Yamaha boats also have cruise control and it's called Cruise Assist.
There is also a No Wake Mode which is the same as the "dock mode" for BRP engines I believe. This is similar to Cruise Assist but at just off idle forward power.
For power, the Scarabs aren't going to be faster unless you select the optional twin 200 or 250 engines. The standard 150 engines would be slower than the standard twin 1.8's. Since there aren't speed tests of the 255 HO Impulse I will use the 21' boats for comparison so you can judge just how efficient or effective it may or may not be having twin 2o0's compared to the 1.8's. They make a little more power but at the hit of fuel efficiency so it's a toss up in what you want most. More power for a few more mph or more fuel economy for longer distance and time between fill-ups? Your call. The twin 250's claim to have over 60 MPH top speed but I've yet to see any tests and no idea how much fuel its burning at those speed either.
BoatTest.com results for the Yamaha 212X:
- Top speed for the Yamaha 212X is 52.9 MPH (85.1 KPH), burning 21.3 gallons per hour (GPH) or 80.62 liters per hour (LPH).
- Best cruise for the Yamaha 212X is 27.5 MPH (44.3 KPH), and the boat gets 3.50 miles per gallon (MPG) or 1.49 kilometers per liter (KPL), giving the boat a cruising range of 158 miles (254.28 kilometers).
BoatTest.com results for the Scarab 215 HO Impulse:
- Top speed for the Scarab 215 HO Impulse (2015-) is 54.9 mph (88.4 kph), burning 35.0 gallons per hour (gph) or 132.48 liters per hour (lph).
- Best cruise for the Scarab 215 HO Impulse (2015-) is 26.8 mph (43.1 kph), and the boat gets 3.3 miles per gallon (mpg) or 1.4 kilometers per liter (kpl), giving the boat a cruising range of 123 miles (197.95 kilometers).
The pros and cons of single throttle versus dual throttle is really up to owner preference. Some owners can't seem to get over the dual throttle and opt for throttle locks to make it easier. However having dual throttle allows for more maneuverability options than with only a single throttle in some situations. It's really up to owner preference.
The BRP motors seem to have a deeper tone so I'm not sure sound is as much of an issue with them. Most videos I've seen of the BRP powered boats the engine sound wasn't bad. Sound is a such a subjective topic because what sounds bad or loud to one person might not even be an issue to another person. Best to take each boat out and see which pushes the right buttons for you.
I do like the closed loop cooling of the BRP 4-Tec engines but I don't boat much in salt water so it's a moot feature for me. However if you boat in salt water more than fresh I can see this being a big selling point. Just keep in mind that the ride plate is a heat exchanger so you will notice steam rolling on the back of the platform area while underway. You can see this in videos on YouTube as well as on this forum.
Some Yamaha boats do have a ballast option. I think the 212X and AR190 come with them but I'm not certain without looking it up. Either way you can always buy ballasts if you want them. The Chaparrals also offer a Wake Wedge and you can check out a video review I posted in their respective sub forum. There are members on here currently developing a similar wake shaping device for the Yamaha boats as well. Basically no matter the boat brand or size, there are plenty of wake shaping options out there for these boats.
I do wish Yamaha offered a chart plotter tied into the Connext system so I will give Scarab a nod on that even if it's an option. Of course there's always aftermarket if you really want to get the best bang for your buck.