Looks like cylinder #1 on an O-360 is dying. Shop says I could get
more time out of it -- good compressions, no metal, but the bottom
plug is covered in oil. Since it has 2500 hours on it, I figured that
it's time.

So -- the big questions

1) Overhaul or buy a new one?
2) If buying a new one, which company? And is there a core refund?
(No, I will NOT get the "Lycoming" brand)
3) What is the difference in break-in procedure for overhaul v new?

thanks