If I buy a 2.93 Quad, I'll likely regret not having the added parallelism or RAM expansion. If I buy a 2.26 Octo, I'll likely regret not having the added clock speed. Either of these compromises is likely to instigate an upgrade/replacement earlier than would otherwise make sense for this level of machine. If I buy a 2.66 Octo, it seems like the least compromise... good clocks, 8 cores, massive RAM expansion. The extra cost of the 2.66 Octo, when factored over the added life this configuration buys me, is probably not that significant. The diminishing returns on the 2.93 Octo, further reinforce that the 2.66 Octo is probably the best purchase. Anyone else thinking this way?