In my experience any one of todays digital cameras will give results superior to film. I have five (including one Olympus) and would never go back to film.
If you shoot reversal film you will find the results much closer. But with digital you have a much greater latitude when using Raw files.
My DSLR's are Nikon so obviously I would be biased to them, but I did used to have an OM2.
Unfortunately your Zuiko lenses will not be compatible with digital cameras, even if you stick with Olympus. Neither will any flash gun you may have. The voltages could fry a DSLR.
I ditched everything when I switched to digital, but I have never regretted it. And they will work like an OM1 - purely manual in every way should you wish it.