I'd have to say I'm with m_hael on this.
I gave PDZ some time and it just kept on feeling awkward to control, and I couldn't stop hating how the all the characters looked, so I've decided to pass it for good. There are some other things to it, and I've said them before here on some thread so let's leave it to that. Let's just say that the downsides just outweighted the positive things for me.
As for PGR3, I don't hate it, but I've found that I'm not picking it up easily, and that I can to put it down very easily - not a good sign for a game. It's partly because I never liked PGR series that much, I don't like the feeling in driving, the clattering kudos points etc, but PGR3 also lacked some very essential things that should be there, like real damage, different weather conditions etc. In my opinion Forza Motorsport in BC 720p washes it in gameplay and still challenges it graphically. Plus it has a better resolution, too

. You could preach me an hour for all the advanced shaders PGR3 has, but Forza with it's gorgeus landscapes looks much better to me and my friends.
In conclusion: PGR3's photo mode and the models are great eye candy, but that's really about it.
I'm surprised to say, but I've found NFS:MW - a ported game that has all the MTV-elements I should hate - much more interesting to play than PGR3, so EA has done something right there. There, I've said it. NFS rocks. Just let me wash my mouth now.
I do believe that both PDZ and PGR3 are good games on their own accounts, but there's just something about them that isn't my cup of tea. I wish I could put my finger on it, but I can't.
These things pretty much just boil down to a game either having or not having that something special for you personally.