The Tige 20V 2005 vs Tige 21i 2007 comparison sits squarely in the category of decisions where specs alone won't tell the whole story: intended use, storage, and long-term ownership costs all factor in.
On paper these two are close siblings in the size department - Tige 20V 2005 at 20,0 ft versus Tige 21i 2007 at 21,0 ft. At 3 880 lbs and 3 880 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.
Both boats share a closely matched power ceiling - 380 hp for the Tige 20V 2005 and 400 hp for the Tige 21i 2007. 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. Both carry nearly identical fuel loads - 38 gal and 36 gal - so range won't be a tiebreaker here.
Both boats are rated for 10 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 Tige 21i 2007 and its 400-hp ceiling. If fuel economy and quieter running matter more than top-end speed, the Tige 20V 2005 with its 380-hp rating is the more economical daily driver.