I have the pup DL and the Outlok, plus I have the old fashion gauges. I would not have the gauges if I had gotten the Outlook first. I like the Outlook and it's functions. The quality has me a little concerned, but not enough that I regret my decision. The EGT's seem inacurate at low temperature levels, but reliable at the 600 degree plus levels. I say this because my Dipricol dial gauge is now after the turbo and it reads about 250 less than the Outlook before the turbo. Also, the Outlook has a much quicker response time than my Dipricol did when first mounted before the turbo. I like this and I use the Outlook's alarm (defueling) setting that you can select. I use 1250.
The Outlook will also let you have in-cab adjustability of power, though I don't understand totally how it works. Probably it's adjusting the percent of the program of the pup download, from 0 - 100%. ex. load the performance and set the Outlook at 0% and you are still operating at stock, I think. It's adjustable in 25% increments.
One word of caution on the Outlook, constructive criticism really. The quality could be better. The joy stick does not work very well on mine. You have to play with it some to get it to work, and it's nearly impossible to do much display changes while moving because the joystick doesn't work well and the truck is bouncing around, a little, even on the freeway. The wiring plug in the back is a joke. You might have to be inventive to get it to stay plugged in, particularly if you don't have a straight shot at the connection. My Outlook has a bug on recording high EGT. I understand BD has a fix, but I haven't followed up on it. And, my biggest complaint is that there are no explanations for any of the displays or adjustments (ex. power level). The instructions say it's self explanatory, but, they weren't counting on someone buying it with my relatively low level of intelligence.
I like the pup. I rarely, very rarely, stomp on the pedal because I know my stock tran could be damaged. Particularly in Performance and 100% (once so far for about two seconds). It's nice to know it's there though in case I get challenged sometime.
I've also check mileage every tank for the last 11,000 miles. I ran 5 tanks in tow download, 100%, and if anything saw a . 5 mpg decrease in mileage though the change corresponded with possible winter diesel blend and a change to stock tires for winter from my 315's. I'm on Performance download now and will run it for 5 tanks or more, then make a decision on what program to normally run.
Can't speak for the EZ. Wait for the Edge with Attitude?
Good luck. I'm sure you will like whatever you end up with.