Lance, I concur with the others on the issue of buying more proc power than RAM initially. But I would caution you that the current crop of Mac Pros I doubt will be upgradeable to really take advantage of Thunderbolt technology, and I personally feel it may be the most in demand feature in the near future. As I understand it, it needs the new Intel procs, to gain the throughput, so retrofits are likely to have bottlenecks, if work right at all. Perhaps there’s something I’m missing in my analysis though?
If what I think is true, then saving up for a newer machine (when they arrive) with TB is best. Getting a very cheap older one is next best (I bought mine used on Craigslist and got it for 1/2 price of newest technology from a laid off bank worker, it’s worked fine for me for the last year + 3 months, and I don’t have Applecare). I won’t buy any machine at this point without TB (Windows or Mac), so I’m holding off on all purchases and using my current machines longer. However, you have a machine that could really benefit from any sort of upgrade. It’s a hard choice. Maybe the idea of a iMac is actually the best choice if you can’t buy ‘right’. The i7’s will be a great chip for a long time to come, I’ve seen it blow the socks off the Intel core duo’s in the windows video editing I also do, and that’s in 64 bit editing. I would assume that for your limited needs even after 64 bit conversion, you will be ok with it. Your downside is that you will be stuck without esata for expansion, but maybe you could live without it for a while. Just make sure your RAID array has both esata & FW800. Some don’t. Then sell your iMac when the next gen comes out and/or you need the new features, and consider the difference your rental fee for using it between now and then.
If you are getting Applecare I assume you are buying new, or refurbished, or through the developer store, so I think that I would say it’s worth it, because these particular machines are VERY expensive and if they die for any reason, the parts cost will likely be higher than the Applecare. I always buy Applecare on new machines.
Hope this helps…
Alf