A few years ago, I had to replace the ignition coils on my Stilo 1.6 (I replaced all 4 of them at the same time, even though only one was defective, as I expected the others to fail at any minute). The odometer reading back then was around 90,000 km (approx. 56,000 miles). Since then, I've driven 85,000 km or so (approx. 53,000 miles), close to the distance the old coils had been used for before one of them failed.

Should I expect my current coils to fail at any minute, or were the original ones known to be poor and not last very long?

My current coils are made by Beru, by the way. (Don't know about the original ones, but I would guess they were made by Sagem.)

I have Hitachis and have 130k kms. I'm replacing thems in a couple of weeks.

IMHO coils are one part that you replace (if and) when they fail, rather than preventatively. I do support the 'if one fails replace them all' philosophy though...