IMO a lot. The drivability of the edge isn't the best on tune 3 and higher levels. It has horrible timing in lvl 4-5 causing high drive pressure and timing rattle. The edge doesn't manage the torque very well and will hurt the trans in the long run if not defueled in the config options it has. Ive had lvl 3 limp several tucks on stock trans. Another reason is having the truck tuned where the customer wants it. Some people want a more sensitive throttle then others. The tuner can also adjust the torque and what rpm he wants the fuel to come in to help save the trans since hes rollin on 35s. Also with efilive and being a LLY the turbo brake is very nice when towing. Custom mileage/street tunes are very nice too.:thumb: With a reputable tuner like Tony, Kory, Rob, ect I think efilive would be way more beneficial to the OP then a edge juice with attitude. But like I said that's JMO.
True that's your opinion. There are many guys out there that do like edges throttle response. I've seen more trans lost to efi then edge. You do have a valid point on the turbo brake and the live tuning. But yet the gains are not worth the 1000 bucks in the ops situation. Also edge is a reputable tuner.