He's perfect for a lot of the stories here.
I agree.
I think his best stories have been "Across the Darian Gap" and "Goon Job"
Seriously, I think I could probably make a list out of stories Ben alone has narrated that I absolutely love. I dug the two you mentioned a lot, also:
Bag Man
What Dead People Are Supposed to Do
Killing Jars
Merlin's Bane
Memories of the Knacker's Yard
The Intrusion
The Mill
Even the stories that I don't necessarily like (the one about the dead dog, for instance, or the Sandwich one), I always enjoy listening to Ben narrate them.