I am currently researching Diesel Tuners for my Dodge truck.  Mostly to gain a little power since i got my 6 Inch lift and 38's.  I seemed to have lost a little grunt, yet it still easily pulls 12-15,000lbs over Donner Summit with Ease.  the 3 contestants i am debating are BullyDog, Banks, and Edge.  Edge seems to have more options, and an easy interface to use to tune power levels, along with boasting the biggest power gain.  Bullydog sems a little archaic, but claims to have equal power with what banks offers.  Does anyone use these products or know first hand which is best for long term options and power in mind?  Thanks -  

well i have the same truck i put the edge chip on it it gives it some sick power but after a year it started to *** with my truck and now if i hook it up it makes my engine all *** up my truck wont even run with it now so i dont know if some thing with the chip went wrong or if it *** up my truck  

I've heard good things on the bully dogs, a buddy of mine has one on his duramax, with no problems.

you could regear it and gain back what you lost, what is the stock gear ratio, for 3:73s use 4:56's and 4:10 goto a 4:88, that will put back where it was.