Hi Growlar. Actually, I just sold the OL Silver this week, and am still using the MG-1. I didn't do close comparison between the two arms - it takes a little time to switch out the arms on my rig, and also, I didn't want to touch the Airy cartridge any more than I have to (last thing I need is to damage the Airy - I'd need therapy for sure ;-)
That said, my impression having used both arms is that the MG-1 sounded better. I was experiencing some skipping of the cartridge, but I ended up setting up the turntable directly on my brick floor, and now there is absolutely no skipping or vibration. The rig is rock solid now, and I'm experiencing no problems. The MG-1 seemed to sound a bit more 'airy', excuse the pun, but that's the best word I can think of. The music seemed a bit more full and effortless. I think I'll be very happy to stay with the arm until such time as I can afford a Schroeder, which may be some time away. I'd be curious to hear other impressions of the MG-1 from more seasoned Audiophiles, as I've only experience with these two arms.