chainz basically got you but for uhhh, since you mentioned sigificance, specifically with leather, the only thing better is (iirc) the epic upgraded blackwood boots.
they're not better by an insane margin which is probably why people aren't desperately farming them out, but generally worth like +1 agil and/or +1 stam compared to the best options (a few epic quest upgrades like sandals of sacrifice, rookies boots/adaptable, krom'gar are the closest I believe) - for rogues specficially vers is like ~2.5 to agil, crit is even less, so it's a pretty clear upgrade unless you're gearing explicitly for crit.
they're also probably? the hardest/rarest farm for rogue BIS except probably Pale Skinner, and they're such a $wag item, you might get a lot of comparative value out of trading them vs. using them