In the ancient days, when my cameras would take chemical emoulsion, Provia was by far my favorite. Lively, but natural. Provia is more saturated at the expense of skin tones and it's more contrasty. I never tried too many of the other films. Astia is very similar to Provia, slightly less saturation, slightly more grain, but much cheaper.

Buy a roll of each and find out for yourself.