Personna Reds (Platinum Chrome is just the Euro packaging, plastic dispenser in 10's instead of a cardboard box in 5's) are not 'sharp', but they work well in more aggressive razors with greater blade exposure. I love the smoothness of them but don't have any really aggressive razors. A slim on 9 is about as aggressive as I have.
It's all about the combination of blades with the razor, and as
@tullfan says, a mild razor tames a sharp blade. A 'sharp' blade we are talking Silver Blues/PermaSharp Supers, Feathers, and vintage blades. There is really not much produced today that you can truly call sharp once you have experienced some of the Vintage blades. Old Wilkies, Spoilers and Personna Super Stainless Electra-Chrome are all far sharper than Feathers by a long way, and last much longer too.
@alfredus is right - the biggest variable is going to be your own technique. Angle and pressure are far more important in overall experience than the blade and razor combo, but it still has an impact.
Agressive razors will just expose more blade and it means that you can get sloppier with your angle. Less blade exposure (milder) means you need to be more precise with angle. I also find that milder razors tend to get better life out of blades as you are not scraping the edge across your face and wearing the edge. Lets face it, your skin is just leather when it is still on the cow. The handle needs to be about 23 degrees from perpendicular to planet face during the razor's orbit.