I ride all three. I can't tell the difference. The 5mm is less than a 1/4". I also ride several types of shoes (one even has insoles) and cleates and I'd bet that there is more than a 1/4" difference between the meat and the pedal axis among all those. I'm not even sure that the saddle height is +/- 1/4" among all bikes. And then there's that fore/aft saddle thing relative to the pedal that's who knows where.
But then I'm a pretty insensitive clot all around. Not to mention old, fat, and stoopid. I still enjoy the scenery.