With the LS5s you will have about as much air between the spokes as you can get. They are a very open design and show off the brakes considerably. I agree with you though, the factory wheels are excellent. I really miss the look of those on my car. Although my favorite OEM's are the R8 wheels.
Thanks MDG, I did look at those before, nice wheels but without drilled discs I don't really want that much air between the spokes. Not really wanting chrome rims either, away from the badges and grille theres not much chrome on the car and over here polished wheels still look too 'Stateside' for me. I really like the standard wheels but as we've all said they sit too far inside the arches and although I'm using spacers, I'd be happier if the wheels themselves did the job.