I just sold a 150 Verado after owning for 3 years. The motor is fun to drive as the supercharger really makes it responsive and the fly by wire system makes for smooth shifting and accelerating. It is fairly fuel efficient when run at cruising speeds, but you’ll watch the guage drop quickly when wide open. The downside is that the motor is heavy which can make the back of the boat sit low in the water and I added splashguards to my last boat because of the motor weight. There are more parts to fail on the Verado and mine was in the shop twice in 2.5 years, but they were both electrical issues and took some time to diagnose.
As far as the Yamahas, I am really impressed with the reliability. They just seem to be bullet proof. I ran my 150 Verado against a regular fishing partners 150 Yammy on comparable 18 ft boats loaded similarly and the 150 Yamaha would run right with my 150 Verado. It’s just my opinion, but for simplicity and solid performance in the 150 class I’d be looking at the Yammy if I were in the market.