Grate n Colorful Oz
The Hutson Hawk
A top pairing RHD is the hardest asset to find. On the opposite, if they are star-level forward, small winger holds marginal value and you can find them each and every year for fringe assets.
This general rule works, but is limited by the actual output of the player.
In other words, you'd have a hard time trying to trade for Stankoven by offering Barron.