I am coming from the PC world and have the opportunity to buy a 16-month old PowerMac G5 with Dual 2.7GHz G5 processors (liquid cooled), 4.5GB DDR RAM, ATi Radeon 9650 (256MB, Dual DVI outputs, can run 30" cinema display), LaCie LightScribe Superdrive (16x DVD +-R/RW) and two hard drives (550 GB total). Plus it has lots of software and all for about $1800. However, it is a PowerPC based CPU and I'm wondering if I should get an Intel-based Mac instead, but it would cost a lot more (obviously). Would I be able to tell the difference? I am not a gamer and only use it for photography - Lightroom and CS2. I'd appreciate your opinions. Thanks in advance.