I've always been a Merc fan, but am considering selling my older 150 and getting a new complete rig down the road. What are your feelings on the yamaha 150 4 stroke vs the Vmax hpdi. I've heard the 4 stroke is not much better on gas and lacks in performance, and also heard it is the best thing since sliced bread. I know I love the top end speed of a 2 stroke, but its nice not to have to worry about oil reservoirs and deal with the smoke and noise. Any experiences, opinions, etc would be appreciated.