I got this for Xmas, and my PS4 is silent while I revel in it on the PS3.
What really hooked me in was the fact that I was able to purchase my actual car pretty much straight away, and I've been racing my Alfa GT 3.2 V6 as much as I can since. They've done a really nice job with replicating the sound and feel of the real thing- Wierdly, whenever I get in my real car after playing the game, it feels about the same.
I have always wanted to be able to get a direct comparison between game & real life- the frustration for me with GT5 was that I couldn't buy the GT in that game.
Another plus is that they put in the Silverstone test track on which I did my single-seater driving day, so there's a track that I've actually driven in real life on there too!
For the record, I got my un modified Alfa around the Nordschleife in 8:58, which I thought was ok for a 1-lap blast (no restarts either!).
My verdict? Better than GT5 by a long shot...