New or used makes a difference, as well as factory or kit built, especially if used.
Jab's are not STOL with all that implies.
I think the factory built Savannah is currently best buy for new STOL. Second hand, factory built Foxbat the best (no Savannah's yet that I know of). As for kit built there are a lot of choise with a lot of types...get someone who REARLY can assess condition/built quality to FULLY inspect before paying anything. Do not get me wrong, there are some beautiful great value kit built aircraft...and some "dogs"!