I have to say that I know several people that use EA with good results.
That includes his mapping, however until you go to the next tuner, who actually knows if it is actually any good.
I've read enough horror stories about Harvey yet I have found him to be very helpful and clearly he does know what he is doing considering some of the engines he builds and what they get used for.
Every tuner has a few unhappy customers, its a way of life sadly.
Certainly seemed that Ian was 110% shafted though but as you have now mentioned that there is to sides to the story you may as well spill the beans