Ehud. CTB is just too good.
Sam has a (essentially) one-time D2 (if you even get that to go off right), negates play abilities (which hurts him for HT), and can band (which makes Edict no longer CBN). The main power of Sam is that he can use Edict CBN and has a sometimes-D2.
Ehud, on the other hand, allows you to CTB even if the opponent has Wall in play, and has plenty of support still for him even without a CBN Edict.
Ehud wins this one for me, hands-down.