Stock 2001 7.3 and newbe help

[Joatmon]

I have read a lot and I still like some input on this before I order.
I have a 2001 F-250 7.3 stock I like to get a Phoenix Chip and I have email Cody and I was told it come with 6 tunes but I like to know what you all recommend as for tunes?
I only use the truck to go to and from work and just looking for something with a little better fuel mileage? I know Cody said they can't guaranty better fuel mileage but I thought a few of you had done this and had some result that you don't mind sharing.
This is what I have pick out

Stock or Modified Stock
40hp Heavy Tow
80hp Daily Driver
100hp Performance
Whisper Mode
High Idle - 1,100rpm

Any input would be appreciate Thanks