We are looking to get a small computer for my wife's art studio. This is to access our photos for reference while she is working. I have seen several 20" G4 iMacs for about £450. This is much cheaper than buying a new mini (£399) and a 20" ACD (£399). Is this a reasonable option or should we be looking for "modern" kit? An additional consideration: we have a white 24" iMac 2.16Ghz with 1Gb. This can be slow with our iPhoto library of 30,000+ images. Would a G4 1.2Ghz, or mini be very much slower? Regards Andrew W.