We are planning to replace a 4yr old PC with a iMac for a family use. My husband is interested in music, iTunes, Garage Band and internet browsing. I'm doing some lite photo editing and interessted in coping our DVD collection and making digital copies that can be played on the iPhone and iPad (wanting quickest conversion time) - our 6yr old son just wants to play a few educational games at this point in his life. My husband thinks that the "refubished" 21.5" w/ 3.06GHz C2D, 4GB of memory, 1TB hard drive and ATI 4670 graphics card with 256MB would meet our needs at $1,299.00 I'm more interested in the "refurbished" 27" w/ 2.66GHz Quad-Core i5, 4GB of memory, 1TB hard drive and ATI Radeon 4850 graffics card with 512MB at $1,666.00. I talked with a online Apple rep that suggested we go with a "new" 21.5" w/ 3.06GHz C2D, 8GB of memory instead of 4GB, a 500GB hard drive and the NVIDIA Geforce 9400M graffics card at $1,399.00 - the rep said that we would could then add a Time Capsule to make up for the smaller hard drive (we will need a back up device), he said this computer would be faster and the graphic card would not negatively effect any of the tings we are interested in doing. Now we are wondering which way to go - please help if you have any constructive comments worth sharing.