I'm an OM user and devotee through and through. Having spent years in the trade, when the first OM-1 non MD model was introduced, it was the camera system for me. I still have it, it's still going strong but as a spectical wearer I did have problems with light entering the viewfinder and affecting the exposure and so my wife uses it now. Not so with the OM-2, 2n versions, which I use regularly now, OTF (metering of the film) has eliminated this problem completely. Over the years I have built up a considerable arsenal of OM equipment because it was light and compact. A well thought out system, no one knew how well thought out, until the introduction of the OM-2. It has progressed, the OM-4Ti was the last model produced. If you can afford one, buy it, but ensure it's in good condition. OM-1's, 1-n's will need new light seals and possibly
2's and 2-n's. Do not buy an OM-4T unless it has been upgraded. The early models eat batteries. If you can stretch to it, buy a mint, exe++,
OM- 4Ti., no if's, no but's, buy it, you'll not be disappointed. Nikon, well they do have the reputation and I cannot deny that they produce excellent equipment, as do Canon and perhaps others, but to me the compactness and the versatility of the OM SYSTEM wins every time. It was only after this system was introduced that other manufacturers started to get their act together but the OM system, IMHO, is still the best SLR SYSTEM ever produced.