For some daft reason and changes in life I wandered away from photography and sold the OM2N. What an idiot I was?
A big one!
Sorry, just had too. I shoot an OM-2 with a couple of primes myself.
You really should get yourself a budget, and then move into a decent camera shop that's well stocked. Where do you live? B&H Photo in New York has seriously good stock.
Thing is, you need to go into one of the shops, and try out the cameras you can afford. At this moment in time, all cameras are very good, and all the systems are good. Go for the camera that feels nice in your hands.
I would suggest a camera that might fit your OM2n dream - the Olympus E-420. Add a 25mm f/2.8 pancake for it, and you'll work with a standard lens.
You could also add in a 14-42 kit lens. Olympus uses the fourthirds system, with a smaller sensor, which means you have to multiply the focal length by 2x to see what the equivelent focal lenght on a 35mm camera would be. 14-42 equals 28-84mm. The 25mm equals the field of view of a 50mm on 35mm film.
So you can understand how it works with the other brands:
Canon has crop 1.6x (100mm = 160mm)
Nikon, Sony, Pentax/samsung 1.5x (100mm = 150mm)
Also, in the higher price range, Canon has its 1D-series, with a crop factor of 1.3x (100mm = 130mm).
And of course, both Canon and Nikon offer cameras with a 35mm sized sensor, but those are very expensive if you buy a new camera.
But generally, get the camera that fits your hand the best in your price bracket.