Both the Champion Boats 186 Fishunter 2006 and the Champion Boats 200 Bay 2010 are modified-V designs, 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?
The power gap is worth calling out. Rated to 200 hp, the Champion Boats 186 Fishunter 2006 has a 50-hp advantage over the Champion Boats 200 Bay 2010's 150-hp ceiling - enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Fuel capacity breaks the other way: the Champion Boats 200 Bay 2010 carries 54 gallons versus 32 gallons in the Champion Boats 186 Fishunter 2006. On a lake day that's negligible, but for coastal cruising or long reservoir runs the extra range matters.
Both boats are rated for 6 passengers - a good fit for a family of four or five plus guests. Comfort at capacity is another matter; the longer hull typically means more seat options and better weight distribution.
Bottom line: The Champion Boats 186 Fishunter 2006 at 28,0 ft is the right call if deck space, comfort, and entertaining are top of your list. The Champion Boats 200 Bay 2010 at 19,5 ft wins on trailering ease, likely lower purchase price, and simpler docking - a solid choice for a buyer who wants more boat for less money.