iMac vs Gateway One
Let's compare with the current iMac. US prices, since there's no UK price announced for the Gateway yet.
Low End iMac: $1200, 2.0Ghz Intel Core 2 Duo, ATI Radeon HD 2400/138MB, 1GB, 250GB, 20" LCD
Low End Gateway: $1300, 1.5GHz Intel Core 2 Duo, Intel X3100, 2GB, 320GB, 19" LCD
High End iMac: $1800, 2.4GHz Intel Core 2 Duo, ATI Radeon HD Pro/256MB, 1GB, 320GB, 24" LCD
High End Gateway: $1800, 2.0GHz Intel Core 2 Duo, ATI Mobility Radeon HD 2600XT/256, 3GB, 500GB, 19" LCD
I'd take the iMac over the Gateway anyday. 33% to 20% more speed, better graphics system. Much better LCD at high end. Only drawback is less standard memory, and a smaller hard drive. Getting the same size hard disk from Apple would cost $50 at the low end and $100 at the high end.