id say wait til the january sales
i disagree, the days of getting great bargains in january are gone these days, just the odd bits and bobs, retailers are selling at such low margins now that the prices are nearly always rock bottom anyway as they are making money in other areas.
You're better off just buying online at the great prices they already are, lcd's are dirt cheap these days and the ps3 is unlikely to see another decrease for a few months yet, possibly the introduction of the 80gb model will drive the 40gb one down, but then everyone will want the 80gb one then anyway.