I have had both. The Volvo was a 5.0 liter w/duoprop. Never had a problem in the 3 years I owned it. I have had my Mercruiser 7.4 liter w/Bravo 1 for 6 years, and the only gripe I got is that the gimbal bearing wears out and needs to be replaced every 2 - 3 years. Oh, and the motor has always been a hard-starter. It'll take 2 or 3 trys to getting it going the 1st startup of the day.