I Have A 1999 2500 5 Speed That I Want To Add Some Kick To; I Am Considering A 4 Inch Turbo Back Exhaust, A Fass Fuel System And Some Sort Of Chip Or Programmer. I Have Been Looking At The Edge Juice With Attitude, Or The Edge Ez. I Have Considered The Quadzilla Xzt, But Some Tell Me The Edge Products Are Better. I Don't Necessarily Need Tons Of Power, Because The Heaviest Thing I Will Pull Is A 16' Trailer With My Tractor, But Some More Power Would Be Great Fun And Maybe A Little Better Fuel Mileage Too. Do You Guys Have Any Input?

 

Your on the right track.
4'' exhaust and FASS system is the perfect start. Also get an intake, Makin one is a good cheap way.
Do a search for how to make a BHAF (big honkin air filter)
If your lookin for a little boost in power, the EZ would be great.

Its a toss up though.
You need gauges, boost and EGT to go with your fuel pess.

Juice/attitude has gauges, but adds more then a little kick, possibly more that will hurt you clutch.
While the EZ, your clutch will prob be fine, but you still need the money for the other gauges.