Likewise I tend to agree that suzuki, yamaha & honda are probably the pick of motors for reliability & resale value.
I just traded my 115 yammy 4/s on a 150. The motor did 1300hrs over the six years I had it and it was still running sweetly at trade in time.
Original cost was $19,000 and they gave me $9,000 trade in for it.
I serviced as per recommendations and servicing cost worked out about $4.00 per hour until I had the 1000 hour service which cost $1200 and effectively increased the servicing cost to $5.00/hr. I see with the new motor there is only one 30 hour service before the regular 100 hr services. The last motor had a 10 hr, 50 hr and then every 100hr service.
I was averaging a fuel consumption of about 1 litre per nautical mile and the motor was pushing a 6 metre hardtop alloy boat. I feel the 115 was underpowered for the hull it was pushing.
I was seriously contemplating changing to a suzuki but their trade in price on the old motor did not stack up with Mr Yamaha's offer.
I feel proximity to service centre and quality of service as well as servicing costs are important considerations. The nearest reputable Honda dealer is miles away which is why I did not look at a Honda as replacment motor.