PG4 is stunning indeed. The visual improvement over PGR3 really surprised me. The image quality, environments, lighting, textures, etc are at least 25% better than PGR3's. lol at the fools that thought the 360 was maxed out.
In terms of gameplay, PGR4 still offers the best balance between sim and arcade. The difficulty levels do a really good job of making the challenge just right for players of all skill levels. My only complaint is that I wish I could have more selection of the races that I want to do, like in PGR3. It's kinda sad that PGR4 has been pigeon holed by some as just another PGR even though it has so many significant improvements. It's nice to know that there're others are EB that appreciate it though. I didn't talk much about this game since not many seemed to have been interested in it.