Looking at the specs of the Sony 870 and 970 the only difference I can see is the size of the HD. Are there any other differences? Is the 970 a better recorder in other ways that do not show on the spec sheet? e.g. picture quality etc.

http://www.sony.co.uk/product/Compar...els=RDR-HXD870


thats all , the size of hard drive

Thanks.