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only just got back to this thread, computer playing up yesterday.
when we were in germany in may, it was quite spooky to go into an aldi there, exactly the same layout and almost the same goods as our local one, even down to the special offers.
we tend to go to aldi once a week, and our local big supermarket (which happens to be asda) maybe every 3 weeks. don't like aldi's bread much, not very fresh i find. and there are some branded goods (heinze sauces, etc) which they don't stock and which we like. we don't have a lidl near us or i'd give them a go too.