One of the lads from this forum was in today for a Sedox Stg1 map, hopefully he will post up his findings later today.
As with anything, theres Good, very good, Ok, bad and very bad. choose a tuner that has experience with your make and model, has the facilities to properly tune the car and you wont go far wrong.
theres good reviews on here for our software as well as Revo, Superchips, Shark, Ptorque etc....