Mark, top 100, I really don't know. Depending on my mood, I can enjoy a "Carnoustie" and a "North Berwick" more or less equally, and I think it's great when an itinerary includes both types. I do think you're being a bit modest about your home club--a palace of quirk it is not, but it tops Ashburnham (and many others) handily both for the presentation of the links and the natural setting.
I think if you'd asked me your question in 2006 I would have responded in the negative without hesitation, but Aberdovey has seen some fairly significant changes in the past couple of years. I think those who haven't been over in recent years will find a much tougher course. The native grass was out of control in the summer of '09--and I don't mean on the dunes, but rather in the course's interior. I suppose you can never entirely separate the subjectivity in play here ("he had a bad day, drove it sideways", etc., and all true), but based on multiple previous visits I just didn't associate Aberdovey with lost balls.
There are a couple of shots of Aberdovey from last year in this piece of propaganda I filmed last year:
http://out-and-back.net/?p=1315. Note the comment below from John Kemp, Aberdovey's consulting architect, which I interpreted as an admission that the course is in something of a transitional period. What's left unsaid is that a lot of this SSSI stuff came into play because the club wanted to build a short game practice facility and add some new back tees. It's entirely possible that Ian and Rob will encounter something different, but Aberdovey '09 wasn't what I'd come to expect from the place.
By contrast, I found Ashburnham to be both challenging and eminently playable. It's just not nearly as romantic of a place as Aberdovey, though, and that factor has a way of putting a thumb on the scales--as it should for the overseas traveler.