Compare?
The P07 is a little larger. I say that because I have an Air Marshall III I use for EDC (most days) and the P01 is sloppy in it while the P07 fits tighter in it.
The P01 feels better in my hand. I don't know why, it just does, maybe because I like my Pre B CZ 85 so much.
Why don't I EDC my P01? Because the P07 is so much more accurate than the P01.
Can the P01 be modified to make it more accurate? Sure. How much money will it take to get to the same level as the stock (internal parts) P07? I don't know and won't be finding out. The P07 just works.
Mags. for the P01 are cheaper. Now, my wife has a CZ 75 Compact that shoots as good as the P07, but it's sort of a "luck" think. Buy any two pistols of the same brand, model and caliber and one of them will be more accurate than the other, or more reliable. Guns are not identical, one to the next, so you've got to understand that.