Both the ThunderJet Alexis 2011 and the ThunderJet Rio Classic 2010 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 - ThunderJet Alexis 2011 at 21,0 ft versus ThunderJet Rio Classic 2010 at 22,0 ft. Weight tells a clearer story for trailering families: the ThunderJet Rio Classic 2010 tips the scales at 4 000 lbs - 1 400 lbs less than the ThunderJet Alexis 2011 at 2 600 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.
The power gap is worth calling out. Rated to 425 hp, the ThunderJet Alexis 2011 has a 100-hp advantage over the ThunderJet Rio Classic 2010's 325-hp ceiling - enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Fuel capacity breaks the other way: the ThunderJet Rio Classic 2010 carries 80 gallons versus 48 gallons in the ThunderJet Alexis 2011. 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: Performance buyers should lean toward the ThunderJet Alexis 2011 and its 425-hp ceiling. If fuel economy and quieter running matter more than top-end speed, the ThunderJet Rio Classic 2010 with its 325-hp rating is the more economical daily driver.