I remember those brochures well, I think I may still have one. The colour schemes were certainly eye catching.
When I got a job maintaining 500's I was told by people at the company I was leaving that I was making a big mistake as they were a nightmare to work on. First day on the new job I remember being startled by how small they appeared to be.
I was lucky to be working for someone who new them really well and I soon learnt that they were actually a great aircraft to work on with only a couple of jobs (fwd undercarriage damper change, engine tacho change insitu!!!) that were a pain.
Hard to choose my personal favourite between the 500 and the Gazelle but I think the 500 gets it for simplicity.
I remember talking to one owner who had previously operated a 206. He said " when I had the 206 every bill came with four digits, with the 500 I get some bills with only three".