This is a great update. I like the motion of the rear-end shot. I really dig the highlight running the length of the car and ending on the fat rear fender. I like the way the taillights light up, especially the third brake light, they just look cool. And I love the small reflection from the lip of the chrome rims.
I don't really like the front view. It's a good picture in general, it just doesn't excite me at all.
I think my favorite is definitely the fish market pic. Is that pic a classic in these forums or something? It's almost unbeatable. I just love the wheels, how lowprofile the rear tires look, how wide they are. The reflections look great, as do the headlights. You should do another update at a different track, or use Monaco again because it does have a lot of nice colors. The blue of the Coupe would look good with some bright sky, ocean, or other vibrant colors mixed in.
Oh, and, the "M Coupe GT-R", well, it's UGLY! It may drive well, but you should delete it's pictures.