If you can, skip all 3 and get the real thing. Canon F1-N.
Out of the 3 mentioned, the Canon AE1-Program is the best.
I owned OM-30 & Canon AE1-Program and did not bother to own the 3rd Canon AV-1.
OM-10 has a killer negative. It has no way to control manual speeds. You need an additional manual speed adapter to do that.
OM-10 is very far below the standard of the OM-1N MD.
Canon AV-1 has a few killer negatives. Its meter cell is CDS, not the much more accurate silicon blue cell. It has no shutter speed dial control. You have to adjust the aperture on the lens and see the corresponding shutter speed indicated by a needle in the viewfinder.
If you posted this thread earlier, I may have given both the OM-30 and Canon AE1-Program to you FOC. Threw both away when spring cleaning for new year a few years ago to make space in my dry cabinet.
You did not give details of what FD mount and OM mount lenses you own.
If any of these are ultimate lenses (e.g. 250mm F2 Zuiko; or FD mount 85mm F1.2L), then they can affect your decision.