The M5 was in a separate room dedicated to M-series cars (IIRC), and I was able to get a lot closer to the M5 than the M535i, which was on a pedestal of sorts.
Anyhow, here are some highlights with links to the Flickr albums. I took a bunch more pics of the M5 so that I had reference images for things like bumper & sidelight fitment, so don't freak out when you see 8 shots of the side of the M5 taken at 6 inch vertical increments.
1985 BMW M5 (Euro) (Link to full album)



1985 BMW M535i (Euro) (Link to full album)



