Looking for base iMac to replace my G5 iMac which has served me well but is starting to get a bit clunky. UK retailer Dixons is selling refurb base i3 iMacs at £735 (includes an 8% discount voucher and basically £300 saving from new) - Apple online store usually sells these refurbs for £865-ish - so a good saving. Are Dixons refurbs supplied by Apple or some other source? I would have no hesitation in getting a refurb from Apple but Dixons are not renowned for their quality customer service and repairs!!! Any comments from members. Thanks in advance.