New guy here with a couple questions before I order.
I have been around the diesel scene off and on. My last truck was a 2002 7.3 auto. It had all the basic stuff (intake, exhaust, gauges) but nothing more serious (HPOP, injectors, turbo).
When I bought that truck it came with an Edge handheld tuner. I ended up using some tunes from Total Diesel Performance on a TS chip. Power increase over the Edge was incredible. I never was quite happy with the tuning though. I had numerous reburns and fine tuning done to the chip but it was always quirky in one way or another. Sometimes the tunes would idle funny, sometimes the shifting was poor, sometimes it would command too much ICP for my stock pump and set a code, etc...
I sold that truck before I could get everything ironed out.
I am now in another 2002 7.3 with all the same basic mods but this time it is a 6-speed. I am currently using a Superchips 1705 tuner as that is what the truck came with. It runs pretty good I guess, but I know there is more in there. Because of my previous experience I am hesitant to try custom tuning again. The Superchips doesn't have any quirks. It always starts and idles great, isn't hot enough to set any codes.....but I am always wanting more.
With a 6-speed, one major thing that can't cause me any concern is shift strategy. That being said, what are the differences in towing vs DD vs performance tunes of the same HP rating? Is the fueling or timing different between these or is it just shift strategy for the autos?
the timing might be slightly different, but the major differences are shifting... so in your/my trucks there isn't any noticeable difference
Ideally I would have just 2 tunes that I really use regularly. 1 that could be used for economy for longer highway trips, and 1 that could be used as a daily performance tune for 99% of my driving. The tunes on the list are broken down as daily/perf/towing. Is there such a thing as an aggressive performing tune with good enough manners for daily driving?
I have the 80 and the 120 hp tunes, the difference is noticable, I am testing which gets better gas mileage for me right now, but it seems like the 120 is fairly calm when you let it be, and it can lay down rubber if you want it to! 
, The 80 still has a lot more power over stock, and it is tougher to lay down rubber, but it is still doable... you do have a manual so you can do that in stock, it just takes more effort.
Thanks for the insight
Brian