Both the Crest 190C4 - C4 Fish 2011 and the Crest Wave 210 Sun Sport 2012 are pontoon designs, both built in aluminium, so the buying decision usually comes down to a handful of practical questions: how many people are you putting on the water, how far do you trailer, and what does your tow vehicle weigh?
On paper these two are close siblings in the size department - Crest 190C4 - C4 Fish 2011 at 19,5 ft versus Crest Wave 210 Sun Sport 2012 at 21,5 ft. Weight tells a clearer story for trailering families: the Crest Wave 210 Sun Sport 2012 tips the scales at 2 302 lbs - 252 lbs less than the Crest 190C4 - C4 Fish 2011 at 2 050 lbs. That difference is meaningful if you're working within a half-ton or three-quarter-ton truck's tow rating, especially once you factor in a motor, gear, and fuel.
Both boats share a closely matched power ceiling - 90 hp for the Crest 190C4 - C4 Fish 2011 and 75 hp for the Crest Wave 210 Sun Sport 2012. Real-world performance will come down more to which motor is actually bolted on, its load at the time, and whether it's a 4-stroke or 2-stroke setup.
For family outings this is probably the sharpest distinction between the two. The Crest Wave 210 Sun Sport 2012 is rated for 11 passengers, while the Crest 190C4 - C4 Fish 2011 caps at 10. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Crest Wave 210 Sun Sport 2012 could be the deciding factor.
Bottom line: Choose the Crest Wave 210 Sun Sport 2012 if your priority is putting more people on the water - it handles 11 passengers and at 21,5 ft it has the deck room to back that rating up comfortably. The Crest 190C4 - C4 Fish 2011 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 10 that costs less to run day-to-day.