The Eastern Eastern 20 2010 is a modified-V design and the Eastern Eastern 22 (Lobster) 2010 is a deep-V design, so you're likely deciding between two noticeably different on-water experiences. Hull type shapes everything from ride quality and fuel burn to dock handling and resale trajectory.
On paper these two are close siblings in the size department - Eastern Eastern 20 2010 at 20,2 ft versus Eastern Eastern 22 (Lobster) 2010 at 22,3 ft. Weight tells a clearer story for trailering families: the Eastern Eastern 22 (Lobster) 2010 tips the scales at 2 550 lbs - 1 050 lbs less than the Eastern Eastern 20 2010 at 1 500 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 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 Eastern Eastern 22 (Lobster) 2010 at 22,3 ft is the right call if deck space, comfort, and entertaining are top of your list. The Eastern Eastern 20 2010 at 20,2 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.