@Relax mentioned skeet , however everything I posted applies to trap as well , fit being number one, adjustable comb number two , and how long you want it to last being three .
And yes trap is a different gun with most following the fashion of higher rib and now longer barrels ( again) . There is some fashion to barrel length . Skeet was twenty six/ twenty eight and now everything is thirty . They all break targets and many shooters have used twenty six for yrs , works fine . An easy to change out butt pad is handy , when you switch clothes in the fall/ winter your length of pull and fit changes . Doesn’t affect my game much , but many change up .