I have both a P-01 and a 75D.
These platforms are virtually identical, with the exception of the rail. And one other feature, the loaded chamber indicator(LCI) on my PCR. This is a factory optional installation, and while my 75D was 'used', it was virtually NIB (even had a blank warrantee card!).
The 75D is marginally lighter (amounts to perhaps the weight of a round or two). I had thought I would use the P-01 as a carry weapon; however, in my hand, I like the 75D better. The grips seem to fit my hand better, but if someone said they were the same, I wouldn't argue. The 75D rear sight is supposedly 'snag free', but I think that may be a holster specific issue.
The LCI in my opinion makes the 75D preferable since it can be carried with a chambered round, and you can easily determine that condition.
I shoot both with the same accuracy, and both handle the Kadet kit flawlessly. IMO, either gun will be fine for range, carry or home defense.
You won't make a bad choice!