Hi Dave
Thanks for your replies. Hattons have around 7 names on their website, not sure how accurate/up to date that is based on the above though!
As regards the business plan for limited release, yes it's frustrating but if that is the price to be paid for such improvements in quality then I think it's worth it. My only suggestion would be to reissue batches with the same numbers on occasion for very popular models, otherwise the profit is made by eBay speculators not yourselves.
SSE