A little bit of research came up with the "fact" that 80% of Philips xenon discharge bulbs are cheap fakes, as here:
www.hidbulbzrus.com/HID_Legitimacy.html
complete with pics of how to spot fakes.
Having compared the new bulbs to the pictures in the second link, I think that my "genuine" Philips may well have been fakes, hence the short service life of months instead of the 8 years of the originals, and the hardly better output of the new ones. I have since bought a new Osram to replace the RH side one, and so far, albeit only after a short drive, no flickering is evident. This would seem to indicate that it was the bulb, not the external ballast, that was at fault. Time will tell.
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SAAB 9-5 - 03 2.3 Flickering bi-xenon li.. new
SAAB 9-5 - 03 2.3 Flickering bi-xenon li.. new
