For what it's worth..... I just bought a 2008 Monterey 194FS w/ the 4.3 Volvo Fuel Injected motor.......... and it is NOT a dog by any means. I've owned several boats in the past (this being my first fuel injected boat)..... this boat has almost 0 dead rise...... pops right up on plane..... acceleration is amazingly smooth, rides like a cadillac on the water compared to many other boats I've owned / ridden in.
Top end... with 3 adults and about 3/4 tank of gas, we were doing just shy of 50mph, and that is without playing with the trim.
~Phil