Thanks Javier.
The hardest part was figuring out which Pentax cameras I wanted to feature. I had room for only six, and I wanted the photo to be visually interesting. There are no K bodies featured, mainly because I don't own any, but also because the Ks were not really breakthrough cameras. If I had to pick a K to feature, I'd pick the K2, but in reality the K2 was just a souped up ESII with a bayonet mount.
The MX, on the other hand, was a 'must.' Although it is a simple manual camera, it is my favorite of all the later Pentax releases. I shot exclusively with an MX for maybe 20 years until I picked up an LX. The MX is the Leica M3 of the Pentax line, an instant and lasting classic. I own three of them.