I run Airtronics 94358 for both. These are what I ran in my 1/8th buggies so I already owned them when I decided to try onroad. The specs are great .10/200oz @6v. I'm sure that the 200oz is overkill, but its what I have.
It seems that the onroad crowd favors digitals more, and for less $ than the 358 ($100) I think you can get a Futaba S9451 ($80). I'm thinking of selling one of my 358s and getting the Futaba for steering duties.