I think there's a lot of fighters being named who you could make arguments have cherry-picked or avoided certain fighters. Let me be clear, these aren't all points I agree with, but Pacquiao has been accused of ducking Mayweather, Guzman and Campbell & he most definitely cherry-picked with David Diaz. Mosley has been said to have avoided Mayweather and Paul Williams. JMM has been accused of avoiding a fight with Amir Khan (I know), even a guy like Adamek has been accused of avoiding a rematch with Steve Cunningham. I think to say someone hasn't cherry-picked you have to come up with a guy who there could be no possible argument about him avoiding somebody, which for me boils down to

Glen Johnson
Vic Darchinyan
Winky Wright
Jermain Taylor
Jhonny Gonzalez
Carl Froch
Chad Dawson

Now, at least 2 of those guys (Vic & Froch) I dislike with a passion, however they have consistently taken on the toughest out there. I think Devon Alexander & Tim Bradley also show the potential to be chasing the toughest fights and ducking nobody.