I have a 4 year old Dell Inspiron 8000 Laptop that is very quickly out growing its usefullness. In September or October I was thinking of buying one of those Mac Minis. How much of an upgrade in performance am i going to get? Here are the specs of the Insipron 8000 and the potential Mac Mini.... Dell: Windows XP Home Pentium 3, 1 Ghz, 256 RAM 20 GB Hard Drive Mini: Mac OS X 1.42GHz PowerPC G4 512MB DDR333 SDRAM - 1 DIMM 80GB Ultra ATA drive 4x SuperDrive (DVD±RW/CD-RW) Internal Bluetooth + AirPort Extreme Card Wired Keyboard & Mouse Set Is this a substantial upgrade or should I just save up some more money and wait until January and buy a (hopefully upgraded) iMac G5? I dont want to buy a Mini if it is only going to provide a marginal upgrade over my laptop.