CGOOSE --- welcome to the forum. I have had a verado for 5 years and got it for the same reason you are talking about, which is the power loss of naturally aspirated engines at higher elevations. Here's my thoughts after years of ownership....(and do seriously consider the Yamaha.....I hear the new Yamahas are also really nice.)
Pros:
- Minimal HP loss at higher elevations due to the supercharger.
- Quiet! In operation it is very quiet, comparatively.
- Power steering is a real plus (but see comments in the Cons)
- Digital throttle and electronic shift
- Almost no vibration on the Vrod 6 cylinder models. They engineered a really nice mount for the bigger HP Vrods.
- Smartcraft gauges are very nice, optional
Cons:
- Heavy, compared to some of the newer 2 strokes out there now.
- The power steering likes batteries if you are using a kicker tied to the Verado. The kicker uses the Vrod power steering (electronic) but a kicker doesn't put out enough charge to make up for the power steering amperage draw. Not a great design by Mercury, but it works. I've run my kicker with the Vrod power steering all day and it does draw down the battery, but with a good AGM battery it's not a big issue.
- Depending on where you live, finding a good certified Vrod mechanic can be a problem. Don't let just anyone work on the Vrod. (I assume this is true for any brand engine)
That said....I didn't put cost in either category as I assume any new 250 is going to be fairly spendy with any brand. Also, the 2 vs. 4 stroke debate is a personal decision. Sounds like you're going down the 4 stroke path. Cost of maintenance is a push with other brands. Lots of folks say the Vrod is more expensive to maintain. I don't find that to be true. I've had one problem with mine in 5 years and that was oil seepage around the seal of one of the trim/tilt rams. The dealer replaced it under warranty. Seriously I don't think you can go wrong with either engine. I do know I messed around with changing props when fishing at different elevations and with the Vrod I never think about it anymore.
Let me know if you have any specific questions.