i couldn't really warm up to Orient automatics due to their (slowwww) 18800bph...it's not so obvious in a small seconds design though...
personally it's a turn off for me, no offence to others
Slow beat rates are alright. Not that bad except the second hands does stutter sometimes.
Omega co-axials have slow beat rates and the second hands does seem less smooth. But in time, you will get used to it.
Slow beat rates does lessen wear and tear on the gears and also tend to have more power reserve theoretically.