I'm a digital photographer currently using a G5 dual-core 2.0Ghz. I'd like to upgrade to a mac pro. I use Photoshop CS3 and Lightroom primarily. No 3D, no video rendering, no gaming. Just 25-250MB digital image files. I was planning to wait for the rumored Penryn Mac Pro in January. However, in another forum (Mac Gurus, where they write extensively on optimizing Macs for Photoshop use), the moderator said that Photoshop can't really take advantage of 8-cores anyhow, so the speed difference between the current Mac Pros and the Penryn's is likely to be negligible for my usage. He said if I was doing video and 3D, it would be different. What do you all think of that? One advantage to buying now is that I could get a refurb for a substantial discount, and use the extra $$ to buy more RAM and fast hard drives - which would arguably have a bigger effect on system/Photoshop performance than the new Penryn processor. Comments?