I'm going to take the plunge and purchase a desktop machine very soon. I would absolutely love the power of a mac pro but everything I'm reading tells me new models are coming out shortly. If they switch over to the new Penryn processors, will they all be Penryn, or will this be the high end machines only? IE - will they continue selling the quad core 2.66's along with the more expensive Penryn processors? What's everyone's take on this? Should I hold off until the new hardware comes out? What does everyone feel about the refurb 2.66 for 2199? Thanks!