I'm not normally a fan of third person games. I prefer 1st person, but I really liked DS1 and 2. Yes, DS2 was a surprisingly good port (if that is what it was), but not so much with DS1. IMO, DS3 will be well worth getting and playing on the PC if they do as good a job porting it as they did with the 2nd one. I know I will be getting it for my PCs. Word of caution: DS2 had a 5 activation limit. (have to remember to uninstall to re-coup the activation) I contacted EA earlier because I forgot and ran out of activations. The rep said that he didn't think DS3 would have that limitation. We'll see.
Update:
Just installed DS2 on a really weak machine. Single core AMD Sempron 145 2.8GHZ with a DDR3 HD 6670 1GB card. I set the graphics option to custom and then set everything to their max settings. I am re-playing it @ 1920x1080 resolution and frame rate is smooth as silk. That just floored me! Max settings at 1080p with a Sempron and 6670?