I'm just fine aiming for a Greg Ellis after a trade down. You can't expect every player selected in the first round to be an every year Pro Bowler. Sometimes getting a solid 10 year starter like Ellis is good. The guy had 84 sacks and is next to guys like Willie McGinest, Howie Long and Leonard Marshall on the all time pass rusher list, that is excellent when you really think about it.
You aren't aiming for that in the top 10, but in the 20s? Sign me up.
Of course you don't want to pick a lower ceiling guy when a higher ceiling guy is also there, but if I felt confident Greg Ellis was there at 25, he'd probably the best evaluated player left on the board at that point.