Both the Xpress H20B-SS 2011 and the Xpress HD Bay Series - HD22Bay 2008 are modified-V 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 - Xpress H20B-SS 2011 at 20,3 ft versus Xpress HD Bay Series - HD22Bay 2008 at 22,0 ft. At 1 261 lbs and 1 219 lbs respectively, both sit in a similar weight class - either should pair comfortably with most mid-size SUVs and half-ton trucks, though always confirm your specific tow rating with the motor added.
The power gap is worth calling out. Rated to 150 hp, the Xpress HD Bay Series - HD22Bay 2008 has a 35-hp advantage over the Xpress H20B-SS 2011's 115-hp ceiling - enough to notice on acceleration and at cruising speed, particularly with a full passenger load.
For family outings this is probably the sharpest distinction between the two. The Xpress H20B-SS 2011 is rated for 8 passengers, while the Xpress HD Bay Series - HD22Bay 2008 caps at 6. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Xpress H20B-SS 2011 could be the deciding factor.
Bottom line: Choose the Xpress H20B-SS 2011 if your priority is putting more people on the water - it handles 8 passengers and at 20,3 ft it has the deck room to back that rating up comfortably. The Xpress HD Bay Series - HD22Bay 2008 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 6 that costs less to run day-to-day.