I could not agree more, and call BS on this sort of thing from a dealer. ALL of these newer big outboards are fantastic running engines, very reliable, despite being so feature rich. They also tend to leapfrog each other as new product introductions march forward. Our Merc Verado, over 4 years of ownership, was absolutely flawless throughout and a joy to own. I much preferred it to the competitive engines, including Yamaha, for my own reasons, but it's exactly that, a preference! It's great to have choices.
I find the newly announced Merc V6 and V8's very intriguing and would not hesitate to give one a go. I really don't think they would have dropped the legendary Optimax line (think bass boats everywhere), without thoroughly wringing these out from a reliability and service-ability standpoint. All good news for buyers in this market.