I am going to buy a G5 1.6 over a G4 2x1.25. 1.) Its the most I can afford to spend on a complete system and I can not wait any longer for bigger and better and cheaper. 2.) Price is roughly the same. 3.) The upgrade path of a G5 is better than that of a G4. Like newer 8xAGP Video Cards, speedier SATA hard drives, 4GB RAM. 4.) The psychological future resale value will be better. In the future when most people know that G5s are the current models, it will be overlooked / forgotten that all the way back in 2003 a G4 Dual 1.25 was in fact a little faster. 5.) Software will get optimised for the 64bit architecture, thus it is possible that future software will run faster on the G5 than it does on a G4. 6.) Audio features are better than that of a G4. 5.1 Digital sound anyone? The G5 has negatives offcourse, like less hard drive bays, less optical drive space, at the moment no much software is optimised for it, it comes with only 256mb RAM, wont fit under my desk and wife does not like the look of them. But for me the positives outweigh them. So if I had to give advice to anyone chewing on this question themselves? If you want to buy a system with current software available and not update / add new hardware / software ever, then buy a G4 as at the moment the benchmarks suggest its faster. But lets face it, most people update their hardware, update the software, install new software, install exciting new games At the end of the day though, I am still unsure with my choice Thank you everybody for your comments and suggestions.